Year Dollars 1992-01-01 3258352 1997-01-01 2670605 2002-01-01 2849563 2003-01-01 3210203 2004-01-01 4373979 2005-01-01 4947655 2006-01-01 8697060 2007-01-01 6482150 2008-01-01 8723001 2009-01-01 8421444 2010-01-01 9921549 2011-01-01 14313449 2012-01-01 15256048 2013-01-01 20931022 2014-01-01 17753833 2015-01-01 17082334 2016-01-01 13881801