Year Dollars 1992-01-01 1238880 1997-01-01 2122800 2002-01-01 1806670 2003-01-01 1593333 2004-01-01 3285586 2006-01-01 3095762 2007-01-01 4429230 2008-01-01 4253823 2009-01-01 4321667 2010-01-01 4971830 2011-01-01 16606711 2012-01-01 8891453 2013-01-01 9592643 2014-01-01 9505661 2015-01-01 29538895 2016-01-01 17653080