Year	Millions of 2011 U.S. Dollars
1960-01-01	38433
1961-01-01	40681
1962-01-01	41550
1963-01-01	45346
1964-01-01	49732
1965-01-01	52587
1966-01-01	58992
1967-01-01	62472
1968-01-01	69553
1969-01-01	79184
1970-01-01	86121
1971-01-01	95113
1972-01-01	101306
1973-01-01	116287
1974-01-01	127196
1975-01-01	136529
1976-01-01	154900
1977-01-01	173206
1978-01-01	191042
1979-01-01	207070
1980-01-01	203155
1981-01-01	218196
1982-01-01	236288
1983-01-01	265072
1984-01-01	291206
1985-01-01	312962
1986-01-01	351268
1987-01-01	394354
1988-01-01	440338
1989-01-01	470069
1990-01-01	513774
1991-01-01	563676
1992-01-01	596173
1993-01-01	633907
1994-01-01	689512
1995-01-01	751090
1996-01-01	805063
1997-01-01	851489
1998-01-01	802836
1999-01-01	888985
2000-01-01	967196
2001-01-01	1005627
2002-01-01	1077529
2003-01-01	1107730
2004-01-01	1158896
2005-01-01	1204756
2006-01-01	1267146
2007-01-01	1331845
2008-01-01	1362455
2009-01-01	1366808
2010-01-01	1453194
2011-01-01	1506004