Year Dollars 1997-01-01 183075 2002-01-01 131087 2004-01-01 136421 2005-01-01 236304 2006-01-01 362794 2007-01-01 174995 2008-01-01 116301 2009-01-01 138709 2010-01-01 404956 2011-01-01 1397253 2012-01-01 882066 2013-01-01 198832 2014-01-01 1205158 2015-01-01 1655290 2016-01-01 1498594