Year	Millions of 2000 Dollars
1960-01-01	1105.2100000000000
1961-01-01	985.8989999999999
1962-01-01	1096.7000000000000
1963-01-01	1123.0900000000000
1964-01-01	1277.0600000000000
1965-01-01	1282.4100000000000
1966-01-01	1495.8900000000000
1967-01-01	1678.3000000000000
1968-01-01	2001.3800000000000
1969-01-01	2131.4500000000000
1970-01-01	1787.2300000000000
1971-01-01	2008.9300000000000
1972-01-01	2413.2200000000000
1973-01-01	2936.7900000000000
1974-01-01	3882.7100000000000
1975-01-01	3948.8100000000000
1976-01-01	5197.9800000000000
1977-01-01	5896.9600000000000
1978-01-01	5717.2000000000000
1979-01-01	6350.5500000000000
1980-01-01	7345.1300000000000
1981-01-01	7527.2300000000000
1982-01-01	6803.0100000000000
1983-01-01	5312.9800000000000
1984-01-01	6123.5300000000000
1985-01-01	5083.0300000000000
1986-01-01	4025.9500000000000
1987-01-01	3654.0800000000000
1988-01-01	2777.8300000000000
1989-01-01	2451.7300000000000
1990-01-01	3473.5100000000000
1991-01-01	3572.1600000000000
1992-01-01	3625.6600000000000
1993-01-01	5178.8100000000000
1994-01-01	7016.1400000000000
1995-01-01	7305.8300000000000
1996-01-01	7949.7400000000000
1997-01-01	8526.5200000000000
1998-01-01	7017.5300000000000
1999-01-01	3361.5400000000000
2000-01-01	3361.5400000000000
2001-01-01	6201.4400000000000
2002-01-01	6016.4500000000000
2003-01-01	7018.7900000000000
2004-01-01	8895.0800000000000
2005-01-01	10292.2000000000000
2006-01-01	11347.2000000000000
2007-01-01	12907.4000000000000
2008-01-01	15941.4000000000000
2009-01-01	16780.2000000000000
2010-01-01	19630.6000000000000
2011-01-01	22243.8000000000000
2012-01-01	25358.7000000000000
2013-01-01	28412.4000000000000
2014-01-01	31411.4000000000000
2015-01-01	27200.7000000000000
2016-01-01	31823.2000000000000