Year Dollars 1992-01-01 592368 1997-01-01 463546 2002-01-01 1344074 2003-01-01 1963288 2004-01-01 2379824 2005-01-01 2687557 2006-01-01 2742526 2007-01-01 3122204 2008-01-01 2885296 2009-01-01 2321727 2010-01-01 1663489 2011-01-01 1594066 2012-01-01 1885355 2013-01-01 3876329 2014-01-01 2603299 2015-01-01 732951 2016-01-01 953435