Year Dollars 1992-01-01 7654343 1997-01-01 48267401 2002-01-01 45362820 2003-01-01 49641535 2004-01-01 57897918 2005-01-01 101665391 2006-01-01 62080897 2007-01-01 67745773 2008-01-01 74963439 2009-01-01 30057660 2010-01-01 37261123 2011-01-01 18320491 2012-01-01 17739845 2013-01-01 60870163 2014-01-01 95115228 2015-01-01 120035244 2016-01-01 189735561