Year	Number
1950	112.146
1951	110.13
1952	107.013
1953	104.79
1954	104.111
1955	104.864
1956	104.958
1957	107.224
1958	110.676
1959	114.245
1960	117.323
1961	119.196
1962	119.968
1963	120.05
1964	120.11
1965	120.392
1966	120.58
1967	120.801
1968	120.891
1969	120.642
1970	119.876
1971	112.591
1972	107.005
1973	102.73
1974	98.985
1975	95.263
1976	93.821
1977	91.683
1978	89.515
1979	88.441
1980	89.008
1981	85.909
1982	83.913
1983	82.664
1984	81.373
1985	79.631
1986	80.808
1987	81.993
1988	83.295
1989	85.197
1990	88.007
1991	88.654
1992	88.887
1993	88.462
1994	87.228
1995	85.307
1996	83.209
1997	81.397
1998	79.575
1999	77.413
2000	74.824
2001	72.202
2002	69.143
2003	65.917
2004	62.961
2005	60.502
2006	58.314
2007	56.684
2008	55.45
2009	54.36
2010	53.272
2011	52.651
2012	51.965
2013	51.33
2014	50.888
2015	50.7
2016	50.603
2017	50.73
2018	50.986
2019	51.223
2020	51.346
2021	51.388
2022	51.31
2023	51.143
2024	50.991
2025	50.899
2026	50.821
2027	50.819
2028	50.799
2029	50.611
2030	50.198
2031	49.588
2032	48.812
2033	47.961
2034	47.174
2035	46.537
2036	46.079
2037	45.763
2038	45.578
2039	45.505
2040	45.533
2041	45.703
2042	45.978
2043	46.376
2044	46.933
2045	47.661
2046	48.546
2047	49.571
2048	50.748
2049	52.075
2050	53.558
2051	55.156
2052	56.92
2053	58.742
2054	60.47
2055	61.982
2056	63.193
2057	64.201
2058	65.013
2059	65.708
2060	66.373
2061	66.894
2062	67.37
2063	67.791
2064	68.158
2065	68.452
2066	68.545
2067	68.589
2068	68.641
2069	68.781
2070	69.09
2071	69.441
2072	69.955
2073	70.623
2074	71.416
2075	72.302
2076	73.199
2077	74.205
2078	75.323
2079	76.514
2080	77.733
2081	78.887
2082	80.138
2083	81.397
2084	82.577
2085	83.655
2086	84.555
2087	85.355
2088	86.085
2089	86.748
2090	87.336
2091	87.625
2092	87.861
2093	88.065
2094	88.233
2095	88.436
2096	88.402
2097	88.398
2098	88.465
2099	88.651
2100	88.954