Year	Dollars
1992-01-01	1081339
1997-01-01	4023962
2002-01-01	6740015
2003-01-01	3162810
2004-01-01	4098634
2005-01-01	1887278
2006-01-01	3372846
2007-01-01	6584965
2008-01-01	10257059
2009-01-01	6558288
2010-01-01	6703779
2011-01-01	9284681
2012-01-01	7894273
2014-01-01	28865501
2015-01-01	5291135
2016-01-01	17320441