Year	Dollars
1997-01-01	7389295
2002-01-01	9091108
2003-01-01	10204228
2004-01-01	14683184
2005-01-01	17402332
2006-01-01	28666644
2007-01-01	32989753
2008-01-01	44711792
2009-01-01	19592538
2010-01-01	30254392
2011-01-01	26306627
2012-01-01	30140812
2013-01-01	25657321
2014-01-01	33475395
2015-01-01	34620321
2016-01-01	32676368