Year Dollars 1992-01-01 686052 1997-01-01 2450837 2002-01-01 5507008 2003-01-01 4047357 2004-01-01 7849989 2005-01-01 2146703 2006-01-01 31973850 2007-01-01 13448008 2008-01-01 15610641 2009-01-01 18334787 2010-01-01 14947696 2011-01-01 18154529 2012-01-01 25646252 2013-01-01 26453173 2014-01-01 33327879 2015-01-01 57816069 2016-01-01 31963401