Year Dollars 1992-01-01 114997 1997-01-01 335980 2003-01-01 649585 2004-01-01 1610768 2005-01-01 2688947 2006-01-01 1982489 2009-01-01 3768876 2010-01-01 2595446 2011-01-01 2899203 2015-01-01 2538813 2016-01-01 546685