Year	Millions of 2011 U.S. Dollars
1960-01-01	104309
1961-01-01	110235
1962-01-01	114930
1963-01-01	121053
1964-01-01	129311
1965-01-01	134252
1966-01-01	137059
1967-01-01	141672
1968-01-01	146827
1969-01-01	154181
1970-01-01	164162
1971-01-01	165713
1972-01-01	169506
1973-01-01	176232
1974-01-01	181868
1975-01-01	186511
1976-01-01	188484
1977-01-01	185476
1978-01-01	188724
1979-01-01	195971
1980-01-01	199303
1981-01-01	198900
1982-01-01	201273
1983-01-01	204916
1984-01-01	213668
1985-01-01	218347
1986-01-01	224594
1987-01-01	232358
1988-01-01	238554
1989-01-01	245184
1990-01-01	247661
1991-01-01	244884
1992-01-01	241937
1993-01-01	236958
1994-01-01	246701
1995-01-01	256444
1996-01-01	260271
1997-01-01	267578
1998-01-01	278713
1999-01-01	291587
2000-01-01	304809
2001-01-01	308637
2002-01-01	316292
2003-01-01	323599
2004-01-01	337169
2005-01-01	347956
2006-01-01	362918
2007-01-01	375097
2008-01-01	372661
2009-01-01	353871
2010-01-01	375792
2011-01-01	390407