Year	Dollars
1992-01-01	438135683
1997-01-01	311728750
2002-01-01	256811313
2003-01-01	266695242
2004-01-01	262441846
2005-01-01	293273563
2006-01-01	327769426
2007-01-01	308535283
2008-01-01	242399847
2009-01-01	153667810
2010-01-01	273523144
2011-01-01	359605024
2012-01-01	299456202
2013-01-01	206584444
2014-01-01	275776498
2015-01-01	285583222
2016-01-01	193678562