Year Dollars 1992-01-01 6660204 2002-01-01 12510714 2003-01-01 46256140 2004-01-01 7365525 2005-01-01 6189709 2006-01-01 7165653 2007-01-01 7777442 2008-01-01 15147595 2009-01-01 21028323 2010-01-01 9455212 2011-01-01 12701699 2012-01-01 9640471 2013-01-01 11556421 2014-01-01 11991532 2015-01-01 20864685 2016-01-01 15078189