Year	Dollars
1992-01-01	49964325
1997-01-01	178511891
2002-01-01	167998061
2003-01-01	214636656
2004-01-01	248069825
2005-01-01	314076645
2006-01-01	391048830
2007-01-01	380108204
2008-01-01	321141260
2009-01-01	254682605
2010-01-01	466733911
2011-01-01	540385546
2012-01-01	601088610
2013-01-01	445046380
2014-01-01	573041488
2015-01-01	413369054
2016-01-01	459420370