Year Dollars 1992-01-01 8738645 1997-01-01 14004165 2003-01-01 2218179 2004-01-01 4287063 2005-01-01 537603 2008-01-01 18872555 2010-01-01 13417059 2011-01-01 15285700 2013-01-01 6220925 2014-01-01 5654850