Year Dollars 1992-01-01 560349 1997-01-01 2329458 2002-01-01 16068048 2003-01-01 19969419 2004-01-01 14895826 2005-01-01 11228458 2006-01-01 10086320 2007-01-01 15788498 2008-01-01 27297328 2009-01-01 24356261 2010-01-01 11622292 2011-01-01 17339697 2012-01-01 31042553 2013-01-01 17849064 2014-01-01 9568932 2015-01-01 10743884 2016-01-01 10410505