Year Dollars 1992-01-01 1244220 1997-01-01 2783836 2002-01-01 1459785 2003-01-01 1498796 2004-01-01 3072704 2005-01-01 2693568 2006-01-01 2599577 2007-01-01 5009332 2008-01-01 7028850 2009-01-01 2850357 2010-01-01 2990252 2011-01-01 7848714 2012-01-01 5596563 2013-01-01 6193285 2014-01-01 20890146 2015-01-01 11001833 2016-01-01 12565962