Year	Millions of 2000 Dollars
1960-01-01	5726.73
1961-01-01	6907.52
1962-01-01	5533.50
1963-01-01	6390.73
1964-01-01	7806.12
1965-01-01	8900.80
1966-01-01	10070.40
1967-01-01	10596.30
1968-01-01	12290.80
1969-01-01	13386.10
1970-01-01	15200.00
1971-01-01	16346.20
1972-01-01	13688.90
1973-01-01	15445.70
1974-01-01	13630.80
1975-01-01	14768.30
1976-01-01	16073.80
1977-01-01	13980.40
1978-01-01	10783.70
1979-01-01	8076.01
1980-01-01	8146.05
1981-01-01	33618.80
1982-01-01	36312.50
1983-01-01	33522.60
1984-01-01	33202.80
1985-01-01	36589.70
1986-01-01	44087.70
1987-01-01	51892.00
1988-01-01	55475.10
1989-01-01	55090.80
1990-01-01	59431.50
1991-01-01	60898.20
1992-01-01	61820.90
1993-01-01	67927.70
1994-01-01	81554.60
1995-01-01	93162.60
1996-01-01	108674.00
1997-01-01	112934.00
1998-01-01	113010.00
1999-01-01	127401.00
2000-01-01	136801.00
2001-01-01	134928.00
2002-01-01	131374.00
2003-01-01	139290.00
2004-01-01	142064.00
2005-01-01	142928.00
2006-01-01	159657.00
2007-01-01	185993.00
2008-01-01	207787.00
2009-01-01	215328.00
2010-01-01	182436.00
2011-01-01	183334.00
2012-01-01	196745.00
2013-01-01	226056.00
2014-01-01	224430.00
2015-01-01	231531.00
2016-01-01	243558.00