Year Dollars 1992-01-01 1660123 1997-01-01 3414271 2002-01-01 7915719 2003-01-01 8423170 2004-01-01 15019571 2005-01-01 20088439 2006-01-01 14879051 2007-01-01 17753371 2008-01-01 27059572 2009-01-01 21890067 2010-01-01 27546393 2011-01-01 41978625 2012-01-01 147682194 2013-01-01 67867317 2014-01-01 33520387 2015-01-01 24726375 2016-01-01 41757259