Quarter Billions of US Dollars 1994-04-01 0.02000 1994-07-01 0.02000 1994-10-01 0.02000 1996-04-01 0.02000 1996-07-01 0.01000 2006-04-01 0.19070 2006-07-01 0.18990 2006-10-01 0.19755 2007-01-01 0.19977 2007-04-01 0.20258 2007-07-01 0.21269 2007-10-01 0.22081 2008-01-01 0.23718 2011-01-01 0.14207 2011-04-01 0.14453 2011-07-01 0.13503 2011-10-01 0.12939 2012-01-01 1.35812 2012-04-01 1.30891 2012-07-01 1.33075 2012-10-01 1.68238 2013-01-01 1.64102 2013-04-01 1.65308 2013-07-01 1.69989 2013-10-01 1.73047 2014-01-01 2.97014 2014-04-01 2.95776 2014-07-01 2.79639 2014-10-01 2.70601 2015-01-01 2.60186 2015-04-01 2.73429