Year Dollars 2002-01-01 793760 2003-01-01 828993 2004-01-01 1517594 2010-01-01 10593681 2011-01-01 19377239 2012-01-01 19482258 2013-01-01 13370644 2014-01-01 13122116 2015-01-01 15766807 2016-01-01 21924503