Year Dollars 1992-01-01 21223114 1997-01-01 14184340 2002-01-01 16448551 2003-01-01 9116428 2004-01-01 21265179 2005-01-01 13322371 2006-01-01 46185861 2007-01-01 30097741 2008-01-01 86735767 2009-01-01 24896925 2010-01-01 84679494 2011-01-01 53389180 2012-01-01 77516270 2013-01-01 38821108 2014-01-01 23027363 2015-01-01 12862905 2016-01-01 19495251