Year	Dollars
1992-01-01	9466349214
1997-01-01	14986247166
2002-01-01	15296924059
2003-01-01	17306014502
2004-01-01	20380101351
2005-01-01	20657293040
2006-01-01	22515927701
2007-01-01	23957688465
2008-01-01	26941989505
2009-01-01	22486519362
2010-01-01	25122688312
2011-01-01	26424934987
2012-01-01	24216839097
2013-01-01	25267918443
2014-01-01	25697266752
2015-01-01	23789258785
2016-01-01	24368142012