Year	2010 = 100
1960	6.81143305722065
1961	6.8482516142867
1962	7.03234439961699
1963	7.40052997027757
1964	7.65825986973997
1965	7.76871554093814
1966	7.91598976920237
1967	7.78712481947117
1968	7.81167052418187
1969	8.11542361997685
1970	8.71372517230028
1971	9.06043325133899
1972	9.43168703508841
1973	11.0394306936396
1974	15.5374310818763
1975	16.869035562432
1976	20.7288476281904
1977	24.3278615813975
1978	26.3712914985637
1979	30.4520149067184
1980	36.5608271665951
1981	42.9396421782896
1982	48.8797027182802
1983	53.6477058583347
1984	59.2042397622205
1985	63.554965922193
1986	62.9781418614914
1987	64.6472497818194
1988	67.7031900183021
1989	72.0385751128304
1990	77.3754480980013
1991	81.3797549967763
1992	83.0883301096067
1993	87.3694390715667
1994	90.709219858156
1995	100
1996	103.655705996132