Year	Dollars
1992-01-01	4018255
1997-01-01	8192083
2002-01-01	3656332
2003-01-01	6277908
2004-01-01	20183005
2005-01-01	18380581
2006-01-01	10758335
2007-01-01	8198552
2008-01-01	16224285
2009-01-01	8821134
2010-01-01	10035505
2011-01-01	15594597
2012-01-01	14100204
2013-01-01	21400639
2014-01-01	22696032
2015-01-01	13291620
2016-01-01	24652952