Year Dollars 1992-01-01 435615 1997-01-01 365505 2002-01-01 112473 2003-01-01 890159 2004-01-01 1680635 2005-01-01 2396808 2006-01-01 2226508 2007-01-01 2667896 2008-01-01 1899972 2009-01-01 1684657 2010-01-01 1954010 2011-01-01 6754972 2012-01-01 2572135 2013-01-01 3059558 2014-01-01 3588345 2015-01-01 4289878 2016-01-01 4041918