Year Dollars 1992-01-01 26346231 1997-01-01 36977491 2002-01-01 92083798 2003-01-01 127827913 2004-01-01 318005534 2006-01-01 171463438 2007-01-01 302486615 2008-01-01 340502243 2010-01-01 627602547 2011-01-01 760930287 2013-01-01 539728643 2014-01-01 472319949 2015-01-01 527852436 2016-01-01 636123877