Year	Dollars
1997-01-01	9267083
2002-01-01	20421042
2005-01-01	31557071
2006-01-01	28546763
2007-01-01	85619290
2008-01-01	115758414
2009-01-01	101825594
2010-01-01	220232588
2011-01-01	125890855
2012-01-01	220623352
2013-01-01	310492183
2014-01-01	499682263
2015-01-01	1063815886
2016-01-01	592495010