Year Dollars 1992-01-01 9864113 1997-01-01 15311624 2002-01-01 15165507 2003-01-01 18995650 2004-01-01 20481242 2005-01-01 32435521 2006-01-01 43165112 2007-01-01 50658209 2008-01-01 45050098 2009-01-01 26225760 2010-01-01 32309443 2011-01-01 43124182 2012-01-01 58567697 2013-01-01 66740892 2014-01-01 69277060 2015-01-01 79524215 2016-01-01 58098424