Year Dollars 1992-01-01 159769 1997-01-01 691843 2002-01-01 721915 2003-01-01 523375 2004-01-01 1118853 2005-01-01 1665725 2006-01-01 4149507 2007-01-01 5133243 2008-01-01 2288165 2009-01-01 2584883 2010-01-01 2745293 2011-01-01 3173686 2012-01-01 2996283 2013-01-01 3030732 2014-01-01 1610877 2015-01-01 1999680 2016-01-01 1746075