Year	Dollars
1992-01-01	18103574
1997-01-01	13649327
2002-01-01	9642720
2003-01-01	7664720
2004-01-01	9629440
2005-01-01	12420101
2006-01-01	15077208
2007-01-01	18968068
2008-01-01	16095633
2009-01-01	16889924
2010-01-01	18339956
2011-01-01	23758697
2012-01-01	17676746
2013-01-01	18995235
2014-01-01	20453587
2015-01-01	18448178
2016-01-01	15218621