Year Dollars 1992-01-01 435181 1997-01-01 1703390 2002-01-01 218481 2003-01-01 185227 2004-01-01 393453 2005-01-01 321071 2006-01-01 646666 2007-01-01 944513 2008-01-01 1231824 2009-01-01 2485507 2010-01-01 3124453 2011-01-01 3288327 2012-01-01 5536350 2013-01-01 4844095 2014-01-01 4102604 2015-01-01 4479446 2016-01-01 5931881