Year Dollars 1997-01-01 635525 2002-01-01 214126 2003-01-01 1220188 2004-01-01 449039 2005-01-01 3078100 2006-01-01 494069 2008-01-01 165833 2009-01-01 210800 2010-01-01 962499 2011-01-01 2197473 2012-01-01 310742 2013-01-01 297652 2014-01-01 385853 2015-01-01 603538