Year	Dollars
1992-01-01	5278607
1997-01-01	10641858
2002-01-01	6524208
2003-01-01	8001476
2004-01-01	11948524
2005-01-01	12132116
2006-01-01	10205579
2007-01-01	16104847
2008-01-01	26742896
2009-01-01	15832547
2010-01-01	16690675
2011-01-01	18450273
2012-01-01	16532226
2013-01-01	21416308
2014-01-01	19495522
2015-01-01	18862686
2016-01-01	21211667