Year Dollars 1992-01-01 2328225 1997-01-01 355463 2002-01-01 2694914 2003-01-01 1593065 2004-01-01 1959988 2005-01-01 1192320 2006-01-01 3435145 2007-01-01 2495148 2012-01-01 16939334 2014-01-01 3026252 2015-01-01 1979266 2016-01-01 1950519