Year Dollars 1992-01-01 39058103 1997-01-01 51646961 2002-01-01 26719067 2003-01-01 24810386 2004-01-01 53645568 2005-01-01 71359873 2006-01-01 93417386 2007-01-01 92717811 2008-01-01 157800271 2009-01-01 66083871 2010-01-01 72997953 2011-01-01 67033823 2012-01-01 162931546 2013-01-01 84528915 2014-01-01 85786395 2015-01-01 30430939 2016-01-01 13736761