Year Dollars 1992-01-01 339817 1997-01-01 1677118 2002-01-01 1337355 2005-01-01 4051714 2006-01-01 4993780 2007-01-01 5249113 2008-01-01 5977053 2009-01-01 3766812 2010-01-01 3218489 2011-01-01 3681289 2012-01-01 2982115 2013-01-01 2800888 2014-01-01 3391674 2016-01-01 6548834