Year Dollars 1992-01-01 1695477 1997-01-01 2878771 2002-01-01 3820342 2003-01-01 2934439 2004-01-01 913390 2005-01-01 3532899 2006-01-01 3169609 2007-01-01 4964887 2008-01-01 10603794 2009-01-01 15079580 2010-01-01 15250792 2011-01-01 24743725 2012-01-01 34108748 2013-01-01 31331957 2014-01-01 19184805 2015-01-01 26287582 2016-01-01 26415947