Year Dollars 1992-01-01 744628 1997-01-01 10163364 2002-01-01 11457906 2003-01-01 15662386 2004-01-01 2701275 2005-01-01 12374172 2006-01-01 7890236 2007-01-01 23189438 2008-01-01 29761368 2009-01-01 15678916 2010-01-01 11155374 2011-01-01 17192481 2012-01-01 25496310 2013-01-01 20053520 2014-01-01 19063316 2015-01-01 19564099 2016-01-01 24016091