Year	current US$
1960	37.75838286236748
1961	30.038433382824504
1962	27.29237466066036
1963	53.449076952776934
1964	61.01167433920529
1965	51.882060588228676
1966	55.32995093292385
1967	51.74129622607414
1968	54.72556148577363
1969	49.45777256238876
1970	64.62910776785859
1971	52.989761861669315
1972	49.727227514805755
1973	90.9662467608147
1974	71.29233727150525
1975	110.61002007047124
1976	99.15820081113567
1977	101.5408674342571
1978	127.4413047156086
1979	165.31457397048752
1980	50.30870629624911
1981	154.7736202415334
1982	76.95659354677261
1983	133.21271308376066
1984	34.51373697389872
1985	54.48028225038371
1986	19.96369683154805
1987	-4.1511239895725796
1988	-8.147987975832578
1989	-14.855070506403846
1990	14.992799906201936
1991	59.91562131418737
1992	12.594595788130396
1993	83.13852876650489
1994	113.36804104212894
1995	24.402587146240574
1996	189.96853994800094
1997	58.491446741559756
1998	56.76288283599862
1999	64.76115873829191
2000	54.449391471949085
2001	4.325391696478928
2002	27.88097038367398