Year Dollars 1992-01-01 5516829 1997-01-01 25526077 2003-01-01 30054241 2004-01-01 159441746 2006-01-01 30366111 2007-01-01 21724782 2008-01-01 25168563 2009-01-01 22547244 2010-01-01 13138892 2011-01-01 7228438 2012-01-01 3061236 2013-01-01 2254575 2014-01-01 2717299 2015-01-01 2768106 2016-01-01 3128330