Year Dollars 1992-01-01 321791 1997-01-01 1716102 2002-01-01 2440744 2003-01-01 1777482 2004-01-01 7718659 2005-01-01 1554074 2006-01-01 3218982 2007-01-01 3829256 2008-01-01 7818848 2009-01-01 8214117 2010-01-01 4052202 2011-01-01 2415617 2012-01-01 2478243 2013-01-01 5022937 2014-01-01 2196859 2015-01-01 2107518 2016-01-01 7242561