Year	Dollars
1992-01-01	8607790
1997-01-01	14572418
2002-01-01	17158085
2003-01-01	25567312
2004-01-01	15080008
2005-01-01	18079054
2006-01-01	19180492
2007-01-01	19743933
2008-01-01	36258953
2009-01-01	21505279
2010-01-01	30801428
2011-01-01	58570654
2012-01-01	68121153
2013-01-01	28063756
2014-01-01	21981400
2015-01-01	21691950
2016-01-01	24059035