Year Dollars 1992-01-01 3347158 1997-01-01 4326870 2002-01-01 2482628 2003-01-01 1929538 2004-01-01 3086312 2005-01-01 3675871 2006-01-01 3624448 2007-01-01 6995707 2008-01-01 16602282 2009-01-01 4449507 2010-01-01 8328131 2011-01-01 6826489 2012-01-01 11515794 2013-01-01 7359726 2014-01-01 7707552 2015-01-01 4625300 2016-01-01 1926143