Year Dollars 1992-01-01 4676059 1997-01-01 823475 2006-01-01 300311 2007-01-01 368846 2009-01-01 155219 2010-01-01 162674 2011-01-01 243647 2012-01-01 368463 2013-01-01 154698 2014-01-01 339018 2015-01-01 492035 2016-01-01 207218