Year Dollars 1992-01-01 17487978 1997-01-01 25089116 2002-01-01 24270811 2003-01-01 23622613 2004-01-01 26504834 2005-01-01 28459924 2006-01-01 27966806 2007-01-01 30289542 2008-01-01 42082378 2009-01-01 35787843 2010-01-01 39343929 2011-01-01 30526964 2012-01-01 26562310 2013-01-01 25245679 2014-01-01 79744704 2015-01-01 83275300 2016-01-01 150860711