Year	2011 U.S. Dollars
1960-01-01	25811
1961-01-01	27057
1962-01-01	28931
1963-01-01	30486
1964-01-01	32094
1965-01-01	33541
1966-01-01	35023
1967-01-01	36640
1968-01-01	38378
1969-01-01	40489
1970-01-01	42426
1971-01-01	44478
1972-01-01	46208
1973-01-01	48583
1974-01-01	50399
1975-01-01	50236
1976-01-01	52014
1977-01-01	53407
1978-01-01	55182
1979-01-01	56735
1980-01-01	57426
1981-01-01	58087
1982-01-01	59379
1983-01-01	60175
1984-01-01	61433
1985-01-01	62583
1986-01-01	63665
1987-01-01	64643
1988-01-01	67023
1989-01-01	68650
1990-01-01	69831
1991-01-01	70461
1992-01-01	72000
1993-01-01	72358
1994-01-01	73670
1995-01-01	74480
1996-01-01	74857
1997-01-01	75978
1998-01-01	77223
1999-01-01	77975
2000-01-01	78808
2001-01-01	79072
2002-01-01	79396
2003-01-01	80010
2004-01-01	81925
2005-01-01	82873
2006-01-01	84010
2007-01-01	84746
2008-01-01	84266
2009-01-01	82695
2010-01-01	84122
2011-01-01	85152