Year Dollars 1992-01-01 1517901 1997-01-01 13536282 2002-01-01 1263564 2003-01-01 5561411 2004-01-01 5523752 2005-01-01 10337175 2006-01-01 12232792 2007-01-01 27275725 2008-01-01 28202964 2009-01-01 16605936 2010-01-01 13922466 2011-01-01 21509731 2012-01-01 18891638 2013-01-01 19646274 2014-01-01 23936150 2015-01-01 7879851 2016-01-01 9111303