Year Dollars 1997-01-01 12724160 2002-01-01 12626460 2003-01-01 16319134 2004-01-01 16537875 2005-01-01 28240191 2006-01-01 66749457 2007-01-01 62167762 2008-01-01 63731555 2009-01-01 13974803 2010-01-01 24658147 2011-01-01 29073492 2012-01-01 24692952 2013-01-01 73087235 2014-01-01 31226479 2016-01-01 38429621