Year Dollars 1992-01-01 4391609 1997-01-01 13152435 2002-01-01 6046298 2003-01-01 6306727 2004-01-01 6100352 2005-01-01 5408440 2006-01-01 5997206 2007-01-01 16027985 2008-01-01 7892612 2009-01-01 5996559 2010-01-01 8219608 2011-01-01 15412211 2012-01-01 23812081 2013-01-01 12922919 2014-01-01 8550869 2015-01-01 7454316 2016-01-01 65285917