Year Dollars 1992-01-01 987798 1997-01-01 6291083 2002-01-01 2188211 2003-01-01 3082945 2004-01-01 10854390 2005-01-01 31774054 2006-01-01 22112551 2007-01-01 16212611 2008-01-01 28988886 2009-01-01 17217040 2010-01-01 16058111 2011-01-01 13442159 2012-01-01 15442194 2013-01-01 17966016 2014-01-01 18203233 2015-01-01 18765617 2016-01-01 24394541