Year Dollars 1992-01-01 849025 1997-01-01 8685830 2002-01-01 1382926 2003-01-01 2783012 2004-01-01 6685224 2005-01-01 23348954 2006-01-01 23351885 2007-01-01 28540433 2008-01-01 20475178 2009-01-01 19013293 2010-01-01 8033624 2011-01-01 13368192 2012-01-01 15092193 2013-01-01 20475278 2014-01-01 21407905 2015-01-01 15333968 2016-01-01 8039158