Year Dollars 1992-01-01 212731 1997-01-01 351792 2002-01-01 57888 2007-01-01 1574608 2009-01-01 444081 2010-01-01 773553 2011-01-01 1067791 2012-01-01 3199727 2013-01-01 1151372 2014-01-01 853294 2015-01-01 1153153 2016-01-01 824462