Year Dollars 1992-01-01 5500264 1997-01-01 9183858 2002-01-01 23656053 2003-01-01 25720819 2004-01-01 22806915 2005-01-01 22015085 2006-01-01 30823612 2007-01-01 22805388 2008-01-01 31299595 2009-01-01 28162057 2010-01-01 45602169 2011-01-01 42350969 2012-01-01 41279942 2013-01-01 44478157 2014-01-01 45451323 2015-01-01 43095146 2016-01-01 46087147