Year	Millions of 2000 Dollars
1960-01-01	13712.5
1961-01-01	15630.2
1962-01-01	16638.9
1963-01-01	17647.0
1964-01-01	19587.0
1965-01-01	21377.2
1966-01-01	23203.1
1967-01-01	18946.9
1968-01-01	20347.9
1969-01-01	23816.4
1970-01-01	25913.2
1971-01-01	28794.7
1972-01-01	32951.7
1973-01-01	37027.7
1974-01-01	41878.7
1975-01-01	44200.4
1976-01-01	47018.0
1977-01-01	46056.0
1978-01-01	49734.8
1979-01-01	54838.7
1980-01-01	54285.7
1981-01-01	50931.5
1982-01-01	45819.7
1983-01-01	45548.1
1984-01-01	45207.2
1985-01-01	62019.7
1986-01-01	74914.2
1987-01-01	97715.7
1988-01-01	108882.0
1989-01-01	117381.0
1990-01-01	129971.0
1991-01-01	115991.0
1992-01-01	87804.0
1993-01-01	78500.8
1994-01-01	94171.3
1995-01-01	105761.0
1996-01-01	93327.8
1997-01-01	80606.7
1998-01-01	87350.2
1999-01-01	83518.1
2000-01-01	75239.7
2001-01-01	73580.7
2002-01-01	96350.2
2003-01-01	123755.0
2004-01-01	139476.0
2005-01-01	126545.0
2006-01-01	150484.0
2007-01-01	186243.0
2008-01-01	184988.0
2009-01-01	188380.0
2010-01-01	180943.0
2011-01-01	180197.0
2012-01-01	179455.0
2013-01-01	189630.0
2014-01-01	171354.0
2015-01-01	166160.0
2016-01-01	159813.0