Year Dollars 1992-01-01 506292 1997-01-01 436326 2002-01-01 636336 2003-01-01 1090877 2004-01-01 1794374 2005-01-01 5461853 2006-01-01 7741669 2007-01-01 4857363 2008-01-01 3788136 2009-01-01 1786865 2010-01-01 4033560 2011-01-01 1683244 2012-01-01 2592311 2013-01-01 5153153 2014-01-01 3313338 2015-01-01 3342629 2016-01-01 4389613