Numbers newly reported from the IMF’s COFER data base show that in the most recent quarter, the spring of 2009, the share of central banks’ foreign exchange reserve holdings that they allocate to dollars resumed its downward trend.   The dollar share has been gradually sliding since the beginning of the decade – perhaps because of the birth of a possible rival, the euro, in 1999, or perhaps because of the long-term path of tremendous fiscal and monetary expansion on which the United States embarked in 2001.   

          During the four quarters preceding the most recent one, the share of the aggregate portfolio that the world’s central banks allocated to dollars had temporarily reversed its downward direction.  Arithmetically, the main source of this increase in the dollar’s share was its appreciation against other currencies.   But another source was the action of central banks in industrialized countries, acquiring dollars more rapidly than other currencies.   The movement of the raw quantity shares can be seen in the first graph below, and the movement in the shares properly valued at current exchange rates in the second graph.   (I am grateful to Ted Truman and Dan Xie, both of the Petersen Institute for International Economics, for these graphs.)   

          Whether the temporary reversal from Q2 of 2007 to Q1 of 2008 is measured in quantity terms or in valuation terms, the phenomenon was presumably a (surprisingly strong) safe-haven reaction to the global financial crisis.  Apparently the recent easing of risk and liquidity concerns has now mitigated the flight into dollars.  The central banks that had shifted into dollars have begun to shift back a bit, into euros in particular.

          The gradual downward trend of the dollar’s share during the past decade is a continuation of the trend that began after the end of the Bretton Woods system: from the late 1970s until 1991.  The dollar’s share recovered from 1992 to 2000.  That temporary halt in the longer run trend may have been in part a result of the deficit reduction path that began with George H.W. Bush’s unpopular fiscal reversal and continued through the time of Bill Clinton achievement of fiscal surpluses, until George W. Bush took office and reinstated the chronic deficits.

          The usual response to worries that US macroeconomic profligacy will eventually end the dollar’s privileged position as lead international currency has always been that no asset constitutes a credible alternative for central banks to hold in their portfolios.   I have argued that, since 1999, the euro has constituted a credible alternative.   Based on econometric estimates of the determinants of central banks’ reserve holdings in research with Menzie Chinn, we have even gone so far as to report simulations that show the euro overtaking the dollar by 2022.  Many, like Truman, consider such speculation exaggerated.  They may be right.

           But the euro is not the only alternative to the dollar.  The yen, pound and Swiss franc remain viable alternatives for national authorities to put some of their reserves.  Furthermore, 2009 has seen the resurrection of two international reserve assets that had previously been written off as dead:  the SDR and gold.  My forecast is that we are gradually moving from the dollar standard to a global monetary system that features multiple reserve assets.

Share of central banks foreign exchange reserves allocated to dollars, 1999 QI – 2009 QII       (among industrial countries, among developing countries, and overall)

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The field of International Monetary Economics is not without its own cycles and fads.

In a speech at the European Central Bank over the summer, “On Global Currencies,” I identified eight concepts that I saw as having recently “peaked” and eight more that I saw as newly rising in relevance. Those that I viewed as losing traction were: the G-7, global savings glut, corners hypothesis, proliferating currency unions, inflation targeting (narrowly defined), exorbitant privilege, Bretton Woods II, and currency manipulation. Those that I saw as receiving increased emphasis now and in the future were: the G-20, the IMF, SDR, credit cycle, reserves, intermediate exchange rate regimes, commodity currencies, and multiple international currency system.

A condensed version appears this month in Finance and Development, from the IMF, titled “What’s ‘In’ and What’s ‘Out’ in Global Money.”  I boil the list down to five concepts that I pronounce “on the way out” and five more that I see as replacing them:

• The G-7 has been rendered largely obsolete by its lack of representation of developing countries, and thus in the course of 2009 has been overtaken by the G-20.

• The corners hypothesis had become conventional wisdom by the end of the 1990s. This was the idea that all countries were or should be abandoning intermediate exchange rate regimes (bands, baskets, crawling pegs, adjustable pegs, and heavily managed floats) in favor of either the floating corner or the institutionally fixed corner (currency boards, dollarization, or monetary union). Since 2001 the tide has turned against the corners hypothesis, and far fewer economists would now assert it as a sweeping generalization.  Certainly a huge fraction of the members of the IMF continue to follow intermediate regimes.

• The language of “unfair currency manipulation,” has been in US law since 1988 and the IMF Articles of Agreement for longer. China during the years 2004-2008 was pretty much the first large country to face charges of unfairly manipulating its currency to keep it undervalued. But US Congressmen who have for years urged China to abandon its link to the dollar could well live to regret it, if they were to get their way and the People’s Bank of China did in fact stop buying US treasury bills. It is finally beginning to sink in among Americans that having China as its largest creditor carries with it some new constraints.  What concept is “on its way in,” to replace the idea that intervening to prevent one’s currency from appreciating is anathema?   Reserves.  Two short years ago, Western economists were lecturing surplus countries that they were acquiring too many reserves.  Today we see that the developing countries that have weathered the 2007-09 crisis the best are countries that had previously piled up the most reserves, other things equal.

• Most controversially, I assert that Inflation Targeting — narrowly defined, I hasten to add — has seen its best days. The definition of IT I have in mind is the proposition that the monetary authorities should set a target range for the increase in the CPI each year, and then should focus all their efforts on hitting it. This orthodoxy says that the central bankers should pay no attention to asset prices, the exchange rate, or commodity prices, except to the extent that they carry implications for the CPI. For large rich countries, it has become clear since 2007 that Alan Greenspan was wrong when he (plausibly) abjured all attempts to identify or discourage bubbles in real estate and stock markets. As a result, the credit cycle view of monetary policy has been resurrected , after a long period when only inflation was thought to matter. For smaller and developing countries, I would also argue that volatility in commodity prices has made it clear that monetary policy should let currencies depreciate, at least somewhat, when the terms of trade worsen, rather than the opposite as is implied by a strict interpretation of CPI targeting. For them, I would propose replacing the CPI target with a more production-oriented price index, such as a target for the PPI or even an export price index.

• The United States has benefited throughout the post-war period by an unlimited ability to borrow in dollars. A popular view two years ago, supported by some of the best scholars, was that the US had earned the dollar privilege by establishing a unique comparative advantage in supplying a saving-glut world with high-quality assets. Then the sub-prime mortgage crisis in 2007 revealed that US assets were not so high-quality after all. The dollar did retain the benefit of being the safe haven currency in 2008, as an exorbitant privilege — contrary to the predictions of those of us who had predicted that the unsustainable current account deficit would lead to a large depreciation. Nevertheless, some developments in the course of 2009 have suggested a global movement away from the unipolar dollar standard, and toward a new multiple international reserve system. These events include the gradual rise of the euro as an international currency to rival the dollar, the sudden and unexpected resurrection of the SDR from near-death, new interest in the yen and gold as safe haven assets (including among central banks), and the very first glimmerings of an international role for the RMB.

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By roughly the five-year mark after the launch of the euro in 1999, enough data had accumulated to allow an analysis of the early effects of the euro on European trade patterns. Studies include Micco, Ordoñez and Stein (2003), Bun and Klaassen (2002), Flam and Nordström (2006), Berger and Nitsch (2005), De Nardis and Vicarelli (2003, 2008), and Chintrakarn (2008). The general finding was that bilateral trade among euro members had indeed increased significantly, but that the effect was far less than the one that had earlier been estimated by Rose and others on the larger data set of smaller countries. Overall, the central tendency of these estimates seems to be a trade effect in the first few years on the order of 10-15%. None came anywhere near the tripling estimates of Rose (2000), or the doubling estimates (in a time series context) of Glick and Rose (2002).

There are three leading explanations for the discrepancy between the estimates of the euro’s effects (10-15% increase in trade among members) and those from historical estimates (doubling or tripling). (more…)

January 1, 2009, is the tenth birthday of the euro.  On this occasion, everyone has been taking stock.   The record of the euro shows both pluses and minuses. Looking back, the euro has in many ways been more successful than predicted by the skeptics — many of them American economists.  (The Europeans love to quote Martin Feldstein as having predicted that EMU could lead to civil war.)  The historic transition to a monetary union among 11 countries in 1999 went smoothly; the euro instantly became the world’s number two international currency; and the officials of the European Central Bank (ECB) have from the beginning worked as citizens of Europe rather than as representatives of home constituencies.  After a rocky start, the euro has achieved a strong value; the ECB has achieved a strong reputation (the tradition of the Bundesbank has not been diluted as feared); and new members to the East have achieved membership in the club.  Slovakia becomes the 16th country to join, on January 1.

At the same time, however, some of the skeptics’ warnings have come to pass:   shocks have hit members asymmetrically; cushions such as US-type labor mobility have not developed; and the Stability and Growth Pact has proven unenforceable.    Furthermore, the popularity of the project with the elites does not extend to the public, many of whom are convinced that when the euro came to their country, higher prices came with it.

One of the most interesting questions at the inception of the euro was whether the elimination of currency risk and of foreign exchange transactions costs would promote trade among members.   Facilitating trade had been one of the most important of the original motivations of founders.  Prior to 1999, however, most economists believed that the effects of currency barriers between countries, if even greater than zero, were small — small, for example, relative to trade barriers.

In 2000, Andrew Rose published in Economic Policy what turned out to be one of the most influential empirical papers of the decade:  “One Money, One Market…”   Applying the gravity model to a data set that was sufficiently large to encompass a number of currency unions led to an eye-opening finding:    members of currency unions traded with each an estimated three times as much as with otherwise-similar trading partners.   Many found the tripling estimate implausibly large.  No sooner had Rose written his paper than the brigade to “shrink the Rose effect” (the phrase is from Richard Baldwin)  – or to make it disappear altogether — descended en masse.  But their plausible methodological critiques can be answered. Authors tended to replicate the finding with a twist. Although they came away denting the magnitude of the estimate, few studies, if any, managed to shrink the estimated effect of currency barriers below the estimated effect of trade barriers.

 This research was of course motivated by the coming of the euro in 1999, even though estimates were necessarily based on historical data from (much smaller) countries who had adopted (or left) currency unions in the past.    But now, 10 years later, we have enough data to see the extent to which the trade-promoting effect that currency unions have showed among smaller countries also carries over to European countries.    This will be the subject of my next post to follow.