Year Dollars 1992-01-01 5666848 1997-01-01 10723199 2002-01-01 5773329 2003-01-01 6654990 2004-01-01 4812295 2005-01-01 18673255 2006-01-01 7500804 2007-01-01 17257354 2008-01-01 19275222 2009-01-01 30520362 2010-01-01 55233343 2011-01-01 42824920 2012-01-01 52792295 2013-01-01 56883926 2014-01-01 62086541 2015-01-01 63627551 2016-01-01 69749881