Year	Dollars
1992-01-01	498920078
1997-01-01	484358261
2002-01-01	585153409
2003-01-01	646292197
2004-01-01	550448209
2005-01-01	589433597
2006-01-01	978380270
2007-01-01	2895212549
2011-01-01	563133205
2012-01-01	624414478
2013-01-01	434773583
2014-01-01	367512481
2015-01-01	365876002
2016-01-01	314096937