Year Dollars 1992-01-01 35164954 1997-01-01 60661814 2002-01-01 68937241 2003-01-01 62384801 2004-01-01 87348294 2005-01-01 108165420 2006-01-01 163640341 2007-01-01 150970122 2008-01-01 158634961 2009-01-01 106406315 2010-01-01 155991705 2011-01-01 227831359 2012-01-01 165748448 2013-01-01 109342105 2014-01-01 106190532 2015-01-01 113673777 2016-01-01 92772288