Year Dollars 1997-01-01 38486 2002-01-01 62131 2004-01-01 112070 2005-01-01 350035 2006-01-01 517813 2010-01-01 275964 2011-01-01 1289936 2012-01-01 483833 2013-01-01 424023 2014-01-01 869978 2015-01-01 221058 2016-01-01 529957