Year	Millions of 2000 Dollars
1983-01-01	66.93140000000000
1984-01-01	61.35050000000000
1985-01-01	76.48330000000000
1986-01-01	75.36830000000000
1987-01-01	81.48990000000000
1988-01-01	88.05640000000000
1989-01-01	99.63430000000000
1990-01-01	97.77970000000000
1991-01-01	86.00470000000000
1992-01-01	93.56040000000000
1993-01-01	93.03310000000000
1994-01-01	111.75900000000000
1995-01-01	131.86100000000000
1996-01-01	136.14200000000000
1997-01-01	194.61900000000003
1998-01-01	201.80000000000000
1999-01-01	253.47600000000000
2000-01-01	267.70300000000000
2001-01-01	275.87400000000000
2002-01-01	343.10900000000004
2003-01-01	361.06400000000000
2004-01-01	438.69000000000000
2005-01-01	458.90400000000000
2006-01-01	515.11300000000000
2007-01-01	627.66100000000000
2008-01-01	761.66300000000000
2009-01-01	968.60000000000000
2010-01-01	1159.62000000000000
2011-01-01	989.15100000000010
2012-01-01	1000.03000000000000
2013-01-01	904.57300000000000
2014-01-01	1104.84000000000000
2015-01-01	1088.03000000000000
2016-01-01	1285.21000000000000