Year Dollars 1992-01-01 9092562 1997-01-01 8520706 2002-01-01 27515800 2003-01-01 8576086 2004-01-01 18551223 2005-01-01 23955278 2006-01-01 29707436 2007-01-01 51229442 2008-01-01 23172086 2009-01-01 27224221 2010-01-01 21346456 2011-01-01 41252984 2012-01-01 38613606 2013-01-01 26028031 2014-01-01 28303722 2015-01-01 25625826 2016-01-01 37054580