Year	Dollars
1997-01-01	7743220
2002-01-01	19488531
2003-01-01	14503240
2004-01-01	18770283
2005-01-01	15729271
2006-01-01	16855194
2007-01-01	19788870
2008-01-01	24018910
2009-01-01	22190086
2010-01-01	23582196
2011-01-01	22188129
2012-01-01	36693872
2013-01-01	38732236
2014-01-01	44776564
2015-01-01	30426284
2016-01-01	37915589