Year Dollars 1992-01-01 1328031 1997-01-01 1922801 2002-01-01 2223120 2003-01-01 2194773 2004-01-01 2484441 2005-01-01 2508598 2006-01-01 2651395 2007-01-01 5199632 2008-01-01 5518318 2009-01-01 8205592 2010-01-01 5784994 2011-01-01 4058474 2012-01-01 4616257 2013-01-01 7204682 2014-01-01 4709449 2015-01-01 4763596 2016-01-01 4678027