Year	2007 US$
1960	0.1915
1961	5.244
1962	3.968
1963	6.951
1964	10.53
1965	16.33
1966	18.1
1967	20.85
1968	21.91
1969	18.46
1970	12.85
1971	13.44
1972	16.69
1973	29.42
1974	37.99
1975	44.24
1976	27.16
1977	51.48
1978	60.87
1979	46.19
1980	57.65
1981	82.17
1982	89.43
1983	60.97
1984	74.54
1985	102.4
1986	58.49
1987	48.19
1988	69.25
1989	67.22
1990	32.78
1991	55.92
1992	35.02
1993	35.85
1994	53.62
1995	88.87
1996	78.35
1997	84.99
1998	79.81
1999	89.07
2000	90.48
2001	131.6
2002	102.6
2003	81.81
2004	97.21
2005	219.3
2006	201.7
2007	217.9