Year Dollars 1992-01-01 1476210 1997-01-01 717560 2003-01-01 9716759 2004-01-01 6307671 2005-01-01 5797632 2006-01-01 5738100 2007-01-01 4119938 2008-01-01 7227121 2009-01-01 21995209 2010-01-01 4956893 2011-01-01 15246407 2012-01-01 4866537 2013-01-01 3815161 2014-01-01 15662358 2015-01-01 1862628 2016-01-01 2477110