Year Dollars 1992-01-01 104553586 1997-01-01 288400287 2002-01-01 231206820 2003-01-01 196731210 2004-01-01 218624643 2005-01-01 420880383 2006-01-01 551498366 2007-01-01 852089078 2008-01-01 1549730784 2009-01-01 1115544225 2010-01-01 748857891 2011-01-01 1397971814 2012-01-01 2111127507 2013-01-01 2279216633 2014-01-01 2625530516 2015-01-01 1482696135 2016-01-01 1251331995