Year	Dollars
1992-01-01	4258265
1997-01-01	14276052
2002-01-01	5041689
2003-01-01	10751783
2004-01-01	7292759
2005-01-01	11184052
2006-01-01	12818700
2007-01-01	16019026
2008-01-01	17386025
2009-01-01	16369407
2010-01-01	20828396
2011-01-01	23532822
2012-01-01	17955843
2013-01-01	32267004
2014-01-01	17411448
2015-01-01	15623099
2016-01-01	11465123