Statistical manna from heaven
The BEA's current account data contained two surprises. One that I expected. Another that I did not.
The "expected" surprise was that the 2005 and 2006 data looks to have been revised to show much (and I mean MUCH) higher central bank purchases of US assets. The "unexpected" surprise — at least to me — was that the data on income payments was also revised down quite significantly and a result of the large change in the income balance, both the 2005 and 2006 current account deficit were revised down. The latest data puts the 2006 deficit at close to $810b, well below the $855 in the last BEA release.
The q1 income balance was consistent with the revised 2006 income balance. The ongoing surplus in the income balance offset a portion of the trade deficit, contrary to my expectations. As a result, the overall q1 current account deficit ($193b) was somewhat lower than I expected.
My guess is that both changes reflect, at least in part, the data in the most recent "survey" of foreign portfolio investment in the US. The June 2005 to June 2006 survey showed two things. One was a much larger increase in "official" holdings of US debt than had been reported in the ongoing "TIC data." and the other was a much smaller overall increase in foreign holdings of US debt than reported in the TIC data.
Daniel Gros of the Center for European Policy Studies has argued that the fact that a certain amount of US debt sold to foreigners "disappears" every year after the survey — he calls this "disappearing into a black hole" — is evidence that the US current account deficit is underreported. Others argue that this "statistical manna from heaven" (See John Kitchen and Bill Cline) shows that the US current account deficit can be sustained for far longer than pessimists think – as ongoing trade deficits simply haven't produced either a significant deterioration in the United States net international investment position (the broadest measure of the US external position — one that includes equity investments as well as debt) or the United States income balance.
That said, the revisions to the income balance seem to come far more from more interest income on US lending than from lower payments on US borrowing — and above all from higher dividend income (counting reinvested earnings) on US direct investment abroad and lower dividend payments (counting reinvested earnings) on foreign investment in the US. And the changes in the "income" of US direct investment abroad and foreign direct investment in the US do not fall out of the survey.
There is little doubt that the data on "official purchases" were revised quite significantly. The last release for 2006 showed "official purchases" of $200b in 2005 and $300b in 2006. (data here) The revised data puts official purchases at $270b in 2005 and a rather impressive $440b in 2006. That is a big change, but one that is very consistent with my world view. I have consistently argued that the US data tends to understate ongoing central bank inflows to the US.