Year Dollars 1997-01-01 932120 2002-01-01 784045 2004-01-01 4062006 2005-01-01 1351600 2007-01-01 7358354 2009-01-01 14444555 2010-01-01 12059230 2011-01-01 24750294 2012-01-01 17692305 2013-01-01 19046993 2014-01-01 10114839 2015-01-01 11452815 2016-01-01 6528281