Year	Number
1950	68.433
1951	69.282
1952	70.345
1953	71.22
1954	71.791
1955	72.15
1956	73.571
1957	74.433
1958	75.069
1959	75.753
1960	76.56
1961	77.573
1962	78.735
1963	79.827
1964	80.515
1965	80.66
1966	81.095
1967	80.945
1968	80.398
1969	79.735
1970	79.108
1971	78.924
1972	78.661
1973	78.311
1974	77.825
1975	77.189
1976	77.038
1977	76.664
1978	76.148
1979	75.594
1980	75.058
1981	74.931
1982	74.783
1983	74.581
1984	74.259
1985	73.791
1986	73.745
1987	73.432
1988	72.933
1989	72.346
1990	71.711
1991	71.293
1992	70.795
1993	70.2
1994	69.477
1995	68.623
1996	67.936
1997	67.135
1998	66.241
1999	65.29
2000	64.31
2001	63.575
2002	62.772
2003	61.922
2004	61.048
2005	60.161
2006	59.443
2007	58.695
2008	57.923
2009	57.115
2010	56.269
2011	55.533
2012	54.734
2013	53.916
2014	53.142
2015	52.449
2016	51.864
2017	51.382
2018	50.957
2019	50.526
2020	50.068
2021	49.779
2022	49.418
2023	49.034
2024	48.694
2025	48.427
2026	48.256
2027	48.14
2028	48.057
2029	47.965
2030	47.844
2031	47.777
2032	47.677
2033	47.555
2034	47.43
2035	47.317
2036	47.274
2037	47.23
2038	47.189
2039	47.153
2040	47.129
2041	47.171
2042	47.22
2043	47.287
2044	47.386
2045	47.527
2046	47.767
2047	48.032
2048	48.324
2049	48.641
2050	48.983
2051	49.39
2052	49.812
2053	50.247
2054	50.689
2055	51.134
2056	51.607
2057	52.073
2058	52.538
2059	53.009
2060	53.492
2061	53.994
2062	54.498
2063	55.008
2064	55.526
2065	56.052
2066	56.595
2067	57.141
2068	57.689
2069	58.242
2070	58.8
2071	59.353
2072	59.909
2073	60.462
2074	61
2075	61.515
2076	61.987
2077	62.437
2078	62.88
2079	63.334
2080	63.811
2081	64.278
2082	64.772
2083	65.291
2084	65.823
2085	66.366
2086	66.874
2087	67.4
2088	67.945
2089	68.505
2090	69.076
2091	69.58
2092	70.104
2093	70.646
2094	71.198
2095	71.756
2096	72.204
2097	72.672
2098	73.157
2099	73.651
2100	74.148