Year Dollars 1992-01-01 5900577 1997-01-01 5941661 2002-01-01 20741893 2003-01-01 29410776 2004-01-01 32417745 2005-01-01 23679535 2006-01-01 41998212 2007-01-01 48897466 2008-01-01 41266918 2009-01-01 31187670 2010-01-01 48105829 2011-01-01 24568731 2012-01-01 29271622 2013-01-01 21355924 2014-01-01 16080544 2015-01-01 19492731 2016-01-01 27584312