Year	Dollars
1992-01-01	35831612
1997-01-01	353524184
2006-01-01	482187828
2008-01-01	472681896
2009-01-01	536655258
2012-01-01	265426872
2013-01-01	391090721
2014-01-01	294703660
2015-01-01	251681114
2016-01-01	227689394