Year Dollars 1992-01-01 530566 2002-01-01 4809592 2003-01-01 8513715 2004-01-01 7533827 2006-01-01 8862496 2007-01-01 27019158 2008-01-01 4472532 2009-01-01 4997099 2010-01-01 8491445 2011-01-01 9819240 2012-01-01 15741481 2013-01-01 44546277 2016-01-01 46169857