Year Dollars 1992-01-01 52130272 1997-01-01 142149252 2002-01-01 31375829 2003-01-01 55446802 2004-01-01 77752062 2005-01-01 83309801 2006-01-01 92387832 2007-01-01 123887388 2008-01-01 146025842 2009-01-01 113293482 2010-01-01 151327429 2011-01-01 158374118 2012-01-01 146991448 2013-01-01 173033530 2014-01-01 166951025 2015-01-01 173987407 2016-01-01 162096019