Year	Dollars
1992-01-01	3011727552
1997-01-01	1913163774
2002-01-01	2169160266
2003-01-01	2349418474
2005-01-01	3408561737
2006-01-01	3841080337
2007-01-01	3547136680
2009-01-01	2831056571
2010-01-01	3546326932
2011-01-01	4779519656
2012-01-01	4089290813
2013-01-01	4289617745
2014-01-01	4627040511
2015-01-01	4246658236
2016-01-01	4232883850