Henry Liu argued for a dollar glut, and I suggested both a dollar glut
(Liu) and a savings glut (Bernanke). The Bank for International
Settlements reports an interesting table which may shed some light on
this: http://www.bis.org/publ/arpdf/ar2005e2.pdf (global saving and
investment trends, as a percentage of GDP, page 24)).
Taking the 2004 figures from this table:
World: saving 24.9% and investment 24.6 % discrepancy -0.2% points
USA: saving 13.7% and investment 19.7 % discrepancy +6% points
Euro area: saving 20.9% and investment 20.2% discrepancy -0.7% points
Japan: saving 27.6% and investment 23.9% discrepancy - 3.7% points
China: saving 48% and investment 43.9% discrepancy -4.1% points
Latin America: saving 21% and investment 19.8 % discrepancy -1.2% points
Central and Eastern Europe: saving 19.1% and investment 19.8%
discrepancy +0.7% points
As you can see, in most cases except the USA, Eastern Europe (and some
Asian tigers not considered yet here) investment levels are below the
savings level, this is really Bernanke's "savings glut" which tends to
be attributed to the lack of a "climate of business and consumer
confidence". Of course, if they get very aggressive towards Iran, this
climate will get even worse.
The "cumulative change in percentage points", taken from the same
table, for 1991-2004 (I assume this means the annual average across
that interval of time?):
World: saving +1.7% and investment +0.1 %
USA: saving -2.5% and investment 1.1 %
Euro area: saving -1.1% and investment -2.9%
Japan: saving -6.8% and investment -9.0%
The USA is really the odd man out here, having imported a lot of
foreign investment capital.
Now, I do not know exactly what they include in saving and investment,
but I assume they use the standard national accounting categories -
investment, they say, includes both "residential and business capital
formation" which refers really to total gross fixed capital formation,
i.e. net new additions to fixed assets, unadjusted for depreciation.
Obviously "gfcf" does not equal total investment, because it excludes
investment in financial assets (and intermediate goods and services,
land purchases and most traded second-hand assets). But financial
assets is precisely where a lot of the apparently "non-invested"
savings have gone - bonds, securities, derivatives, hedges and the like.
If we were to exclude investment in residential real estate from total
investment, the discrepancy between saving and fixed investment
becomes much more dramatic (I do not have this data on hand just now).
Basically, fixed investment in production has stagnated, or even
declined, in real terms. GDP also includes the imputed rental value of
owner-occupied housing, and again, if we take that out, the trend is
more sharply visible. As I have previously argued, because more people
now own homes with a mortgage, which appreciate in value, rather than
rent housing (in OECD countries), this boosts GDP totals and therefore
also official economic growth totals.
If we disaggregated savings and their disposition according to income
groups, we'd probably find that the poor don't save because they do
not earn sufficient money, and the rich do not use their additional
savings for new investment in productive physical assets (excess
capacity in relation to final consumer demand) but invest more in
financial assets instead. The middle classes also do not invest much
of their savings because of uncertainty about the future. Out of this,
we get ideologies such as that there is a lack of entrepreneurship, a
lack of risk taking and so on.
So anyway, in reply to Henry, my hunch is that there's both a dollar
glut (unusable currency reserves of governments - BIS claims an
additional $535 billion in Asian reserves during 2004, raising total
Asian reserves to $2.4 trillion) and a savings glut - a savings glut
in the sense of a lot of capital seeking acceptable, low-risk yields
outside the sphere of production. Or, in Marx's phrase, "the ultimate
barrier for capital is capital itself". The result is a sluggish,
rather conservative world economy, lacking much dynamism overall,
except in a few sectors such as minerals, financial speculation,
computers etc. It's not that there is a capital shortage, rather
capital is globally superabundant - but globally, under conditions of
extreme income disparities and volatility, the additional capital
created is not invested very much in expanding productive capacity.
The capital "shortage" exists perhaps only from the point of view of
those who seek long-term capital to invest in expanding production,
including governments concerned about job-creation.
In other respects, it seems to be a "live now, pay later" kind of
world based on relatively easy credit - to the extent that not just
the historical trend in fixed investment, but also in savings is down.
To balance out the picture though, really we need data on the trends
in final consumer demand...
Jurriaan