Year Dollars 1992-01-01 71414686 1997-01-01 63852353 2002-01-01 36307389 2003-01-01 31079532 2004-01-01 39564155 2005-01-01 41434371 2006-01-01 47538913 2007-01-01 62774453 2008-01-01 68678532 2009-01-01 39545104 2010-01-01 53680090 2011-01-01 49364935 2012-01-01 52234188 2013-01-01 40314688 2014-01-01 73141668 2015-01-01 68650515 2016-01-01 238208126