Year	Dollars
1992-01-01	3081428311
1997-01-01	7162034280
2002-01-01	10003497974
2003-01-01	10056755857
2004-01-01	11923615895
2005-01-01	13992768245
2006-01-01	16025916029
2007-01-01	18526394944
2008-01-01	17829485432
2009-01-01	16494322380
2010-01-01	18317772516
2011-01-01	18991009793
2012-01-01	20751279107
2013-01-01	24231058101
2014-01-01	26475974510
2015-01-01	26316553299
2016-01-01	27834889393