Year Dollars 1992-01-01 1754458 1997-01-01 5308803 2002-01-01 1701376 2004-01-01 5586938 2005-01-01 20222516 2006-01-01 43067776 2007-01-01 42955606 2008-01-01 32587443 2009-01-01 17923062 2010-01-01 14606420 2011-01-01 32644101 2012-01-01 23122054 2013-01-01 27219159 2014-01-01 8881380 2015-01-01 8240357 2016-01-01 34141048