Year	current US$
1960	0.4659371953935585
1961	0.6039056463583979
1962	0.789749052957725
1963	0.6331306980531496
1964	6.990069182367705
1965	3.098644735972907
1966	1.020512305021862
1967	1.5111519762585388
1968	0.07844626312611194
1969	0.061200164484519114
1970	0.10436965988615238
1971	2.9616595192718815
1972	13.925668081375123
1973	30.93617035964642
1974	224.77196158724144
1975	178.01203373350535
1976	206.82433212439796
1977	419.39722256859295
1978	66.41467973912332
1979	253.1164615367514
1980	215.5657919716461
1981	234.2826117676809
1982	119.95069255507376
1983	59.13038848317535
1984	83.5855641182685
1985	57.32700245923428
1986	71.94588399851536
1987	29.295313446787656
1988	3.141490843559648
1989	14.406262747154397
1990	37.7938985284996
1991	6.906970210637737
1992	19.96245319457936
1993	62.590856500404946
1994	72.86489330413629
1995	34.56112857250915
1996	37.52560017211901
1997	44.709894034826966
1998	243.77479857648527
1999	22.982790593219278
2000	33.98523886668602
2001	3.4994588344556865
2002	32.022013613704395
2003	26.4476055101965
2004	40.64232056475208
2005	7.569998996310144
2006	21.115740460650482
2007	82.11996612332156
2008	28.15888837306845
2009	8.08144586601055
2010	-7.498489063293214