Year Dollars 1997-01-01 140294 2002-01-01 28940 2003-01-01 175588 2005-01-01 53358 2006-01-01 163231 2007-01-01 51466 2009-01-01 114009 2010-01-01 101676 2011-01-01 163870 2013-01-01 182466 2015-01-01 215094 2016-01-01 270932