Year Dollars 1992-01-01 663402 1997-01-01 2216772 2002-01-01 1059206 2003-01-01 1134655 2004-01-01 1274283 2005-01-01 2748980 2006-01-01 5497794 2007-01-01 7331929 2008-01-01 10897207 2009-01-01 7913072 2010-01-01 8841201 2011-01-01 16134158 2012-01-01 20224601 2013-01-01 14693770 2014-01-01 19642125 2015-01-01 24157333 2016-01-01 24815257