Year	2011 U.S. Dollars
1960-01-01	34524
1961-01-01	35015
1962-01-01	35803
1963-01-01	36487
1964-01-01	38942
1965-01-01	40660
1966-01-01	41476
1967-01-01	43809
1968-01-01	46314
1969-01-01	48654
1970-01-01	50862
1971-01-01	52517
1972-01-01	54684
1973-01-01	57271
1974-01-01	58845
1975-01-01	58887
1976-01-01	61035
1977-01-01	62511
1978-01-01	63362
1979-01-01	63295
1980-01-01	62966
1981-01-01	62753
1982-01-01	62916
1983-01-01	64792
1984-01-01	66234
1985-01-01	66694
1986-01-01	66974
1987-01-01	66837
1988-01-01	67909
1989-01-01	69057
1990-01-01	69816
1991-01-01	70172
1992-01-01	70379
1993-01-01	70966
1994-01-01	72564
1995-01-01	73178
1996-01-01	74017
1997-01-01	74865
1998-01-01	75824
1999-01-01	77388
2000-01-01	78668
2001-01-01	78211
2002-01-01	77319
2003-01-01	78023
2004-01-01	79922
2005-01-01	81506
2006-01-01	82742
2007-01-01	83928
2008-01-01	84159
2009-01-01	81039
2010-01-01	84583
2011-01-01	85437