Year Dollars 1992-01-01 7502408 1997-01-01 49017252 2002-01-01 12304461 2003-01-01 12430234 2004-01-01 24841312 2005-01-01 24858191 2006-01-01 27333348 2007-01-01 40590156 2008-01-01 43247186 2009-01-01 40807655 2010-01-01 63305019 2011-01-01 41584334 2012-01-01 27981889 2013-01-01 29059425 2014-01-01 65918224 2015-01-01 98789045 2016-01-01 79430044