Year	2011 U.S. Dollars
1960-01-01	38808
1961-01-01	40630
1962-01-01	41496
1963-01-01	42892
1964-01-01	44915
1965-01-01	46870
1966-01-01	48449
1967-01-01	51176
1968-01-01	52282
1969-01-01	54160
1970-01-01	54363
1971-01-01	56941
1972-01-01	59258
1973-01-01	61472
1974-01-01	62988
1975-01-01	65071
1976-01-01	66610
1977-01-01	67496
1978-01-01	68904
1979-01-01	70918
1980-01-01	72358
1981-01-01	72549
1982-01-01	72616
1983-01-01	75578
1984-01-01	79439
1985-01-01	81430
1986-01-01	82033
1987-01-01	81831
1988-01-01	82137
1989-01-01	85387
1990-01-01	87816
1991-01-01	91448
1992-01-01	94867
1993-01-01	96828
1994-01-01	100349
1995-01-01	102420
1996-01-01	105512
1997-01-01	108034
1998-01-01	108047
1999-01-01	109227
2000-01-01	112140
2001-01-01	113969
2002-01-01	115240
2003-01-01	117754
2004-01-01	121850
2005-01-01	123404
2006-01-01	122200
2007-01-01	120490
2008-01-01	116751
2009-01-01	115316
2010-01-01	116190
2011-01-01	116251