See Table 9. Family holdings of nonfinancial assets and of any asset, by selected characteristics of families and type of asset, 2004 and
2007 surveys—Continued
http://www.federalreserve.gov/pubs/bulletin/2009/pdf/scf09.pdf
2007 surveys—Continued
http://www.federalreserve.gov/pubs/bulletin/2009/pdf/scf09.pdf