Year	Dollars
1992-01-01	3014794
1997-01-01	6691561
2002-01-01	10608553
2003-01-01	8767520
2004-01-01	10502814
2005-01-01	20711334
2006-01-01	31872938
2007-01-01	38802911
2008-01-01	58864799
2009-01-01	36564497
2010-01-01	42676447
2011-01-01	51917164