Year	Dollars
1992-01-01	8409742
1997-01-01	4371619
2002-01-01	1797335
2003-01-01	3148107
2004-01-01	3527108
2005-01-01	13855789
2006-01-01	19784431
2007-01-01	28584261
2008-01-01	8834745
2009-01-01	21972982
2010-01-01	32044337
2011-01-01	15050483
2012-01-01	6783353
2013-01-01	24841554
2014-01-01	8812545
2015-01-01	10643596
2016-01-01	19722006