Year Dollars 1997-01-01 2774275 2002-01-01 942984 2003-01-01 1609394 2004-01-01 1279193 2005-01-01 1185851 2006-01-01 3043040 2007-01-01 4389872 2008-01-01 5905599 2009-01-01 4405839 2010-01-01 7377749 2011-01-01 8483954 2012-01-01 12092388 2013-01-01 12261904 2014-01-01 12624532 2015-01-01 5772613