Year	Dollars
1992-01-01	2627935
1997-01-01	9587032
2002-01-01	5417020
2003-01-01	7121091
2004-01-01	14418845
2005-01-01	15975655
2006-01-01	17761758
2007-01-01	35899546
2008-01-01	46210264
2009-01-01	50438833
2010-01-01	150736144
2011-01-01	98823942
2012-01-01	62861257
2013-01-01	48920674
2014-01-01	70020720
2015-01-01	49891711
2016-01-01	41191489