Year	Dollars
1992-01-01	5936153
1997-01-01	10384900
2002-01-01	15213157
2003-01-01	16764621
2004-01-01	14153399
2005-01-01	12345686
2006-01-01	11549939
2007-01-01	17364143
2008-01-01	9296114
2009-01-01	9618389
2010-01-01	14060402
2011-01-01	18861174
2012-01-01	16408651
2013-01-01	32080178
2014-01-01	16377825
2015-01-01	21387544
2016-01-01	15594465