Year	Dollars
1997-01-01	326424
2002-01-01	989113
2003-01-01	1658576
2004-01-01	583417
2005-01-01	1062489
2006-01-01	1755610
2007-01-01	3603901
2008-01-01	5983409
2009-01-01	1440718
2010-01-01	2844563
2011-01-01	8809327
2012-01-01	20024098
2013-01-01	21607627
2014-01-01	12136334
2015-01-01	4828498
2016-01-01	7261373