Year Dollars 1992-01-01 3835759 1997-01-01 1302204 2002-01-01 4132004 2003-01-01 4902869 2004-01-01 6877551 2005-01-01 7812353 2006-01-01 8662562 2007-01-01 14535046 2008-01-01 27331403 2009-01-01 8856571 2010-01-01 8352586 2011-01-01 15168934 2012-01-01 12729783 2013-01-01 10204453 2014-01-01 18685878 2015-01-01 11353962 2016-01-01 8486694