Year	Millions of 2011 U.S. Dollars
1975-01-01	85842
1976-01-01	86137
1977-01-01	86344
1978-01-01	88865
1979-01-01	95194
1980-01-01	100324
1981-01-01	101615
1982-01-01	104713
1983-01-01	107879
1984-01-01	111232
1985-01-01	114906
1986-01-01	117941
1987-01-01	122057
1988-01-01	128431
1989-01-01	134952
1990-01-01	135634
1991-01-01	127496
1992-01-01	123053
1993-01-01	122055
1994-01-01	126515
1995-01-01	131528
1996-01-01	136223
1997-01-01	144676
1998-01-01	151955
1999-01-01	157893
2000-01-01	166299
2001-01-01	170097
2002-01-01	173217
2003-01-01	176703
2004-01-01	183992
2005-01-01	189357
2006-01-01	197709
2007-01-01	208258
2008-01-01	208869
2009-01-01	191034
2010-01-01	197384
2011-01-01	202795