Year	Dollars
1992-01-01	5103002396
1997-01-01	8876656931
2002-01-01	9760818525
2003-01-01	10417970922
2004-01-01	11469013079
2005-01-01	13389481416
2006-01-01	15700550668
2007-01-01	17895430872
2008-01-01	18806283447
2009-01-01	15417407754
2010-01-01	18214217111
2011-01-01	20375554886
2012-01-01	21303033722
2013-01-01	21066543439
2014-01-01	21390107634
2015-01-01	20331760470
2016-01-01	18990116342