Year Dollars 1992-01-01 36659091 1997-01-01 27543203 2002-01-01 55054075 2003-01-01 68341278 2004-01-01 58794245 2005-01-01 98696195 2006-01-01 193344918 2007-01-01 169541865 2008-01-01 146180013 2009-01-01 68329408 2010-01-01 98741685 2011-01-01 121301120 2012-01-01 84594302 2013-01-01 169645870 2014-01-01 218534849 2015-01-01 175557360 2016-01-01 143356222