Some data from the Flow of Funds:
In 2011Q2, total credit union assets were about $940 billion. They broke down this way:
Cash (reserves, deposits, Treasuries, Fannie/Freddie bonds) 32.3% home mortgages 34.5% consumer credit 23.5% business loans 3.5% misc. 6.2%
Since the start of the recession (2007Q4), growth in credit union assets has been about $182 billion. The growth breaks down this way:
Cash (reserves, deposits, Treasuries, Fannie/Freddie bonds) 89.3% home mortgages 23.6% consumer credit -8.2% business loans 3.3% misc. (including bonds held by USCCU) -8.0%