Year Dollars 1992-01-01 652339 1997-01-01 6231309 2002-01-01 14144428 2003-01-01 11293371 2004-01-01 21211479 2005-01-01 22675778 2006-01-01 22294687 2007-01-01 23498343 2008-01-01 25039598 2009-01-01 14430469 2010-01-01 14766798 2011-01-01 21385566 2012-01-01 24875378 2013-01-01 35676927 2014-01-01 25421956 2015-01-01 31196168 2016-01-01 24527435