Year Dollars 1992-01-01 8309250 1997-01-01 4766363 2002-01-01 8759518 2003-01-01 10679310 2004-01-01 24866726 2005-01-01 15650382 2006-01-01 25711774 2007-01-01 18601322 2008-01-01 20272716 2009-01-01 15679717 2010-01-01 21421586 2011-01-01 20587945 2012-01-01 44945274 2013-01-01 26584393 2014-01-01 24374808 2015-01-01 40765909 2016-01-01 20373414