Year Dollars 1992-01-01 15609561 1997-01-01 28175910 2002-01-01 28914978 2003-01-01 34000651 2004-01-01 44923873 2005-01-01 65333037 2006-01-01 83525613 2007-01-01 91606943 2008-01-01 89759254 2009-01-01 81446990 2010-01-01 100781474 2011-01-01 44736231