Year Millions of 2000 Dollars 1984-01-01 447.37600000000000 1985-01-01 510.31400000000000 1986-01-01 561.83800000000010 1987-01-01 552.27000000000000 1988-01-01 567.58300000000010 1989-01-01 555.54099999999990 1990-01-01 542.19900000000010 1991-01-01 547.35400000000000 1992-01-01 503.80000000000000 1993-01-01 494.81600000000000 1994-01-01 499.55500000000000 1995-01-01 512.90600000000000 1996-01-01 459.64000000000000 1997-01-01 431.38599999999997 1998-01-01 407.10100000000000 1999-01-01 381.20099999999996 2000-01-01 372.87400000000000 2001-01-01 394.82300000000004 2002-01-01 446.11300000000006 2003-01-01 515.64000000000000 2004-01-01 568.70600000000000 2005-01-01 612.30700000000000 2006-01-01 664.24500000000000 2007-01-01 693.05200000000000 2008-01-01 834.84300000000010 2009-01-01 954.82000000000000 2010-01-01 1055.52000000000000 2011-01-01 979.36500000000000 2012-01-01 1107.42000000000000 2013-01-01 1166.32000000000000 2014-01-01 1233.09000000000000 2015-01-01 1457.07000000000000 2016-01-01 1552.61000000000000