Year	Number
1950	50.386
1951	51.148
1952	51.762
1953	52.352
1954	52.859
1955	53.166
1956	53.061
1957	52.957
1958	52.744
1959	52.39
1960	51.938
1961	51.76
1962	51.387
1963	50.961
1964	50.667
1965	50.596
1966	50.83
1967	51.18
1968	51.652
1969	52.176
1970	52.686
1971	53.415
1972	54.124
1973	54.778
1974	55.336
1975	55.774
1976	56.077
1977	56.225
1978	56.241
1979	56.151
1980	55.969
1981	55.749
1982	55.48
1983	55.192
1984	54.944
1985	54.799
1986	54.814
1987	54.924
1988	55.113
1989	55.337
1990	55.562
1991	56.019
1992	56.404
1993	56.731
1994	56.958
1995	57.023
1996	57.07
1997	56.843
1998	56.42
1999	55.944
2000	55.51
2001	54.69
2002	54.173
2003	53.829
2004	53.488
2005	53.108
2006	53.165
2007	52.998
2008	52.773
2009	52.775
2010	53.164
2011	53.85
2012	54.967
2013	56.437
2014	57.967
2015	59.304
2016	60.397
2017	61.306
2018	62.022
2019	62.609
2020	63.134
2021	63.721
2022	64.202
2023	64.599
2024	64.949
2025	65.274
2026	65.527
2027	65.743
2028	65.964
2029	66.249
2030	66.635
2031	67.019
2032	67.528
2033	68.079
2034	68.553
2035	68.883
2036	69.016
2037	69.035
2038	68.992
2039	68.942
2040	68.905
2041	68.86
2042	68.866
2043	68.899
2044	68.946
2045	69.032
2046	69.132
2047	69.276
2048	69.49
2049	69.784
2050	70.145
2051	70.421
2052	70.763
2053	71.165
2054	71.64
2055	72.207
2056	72.734
2057	73.369
2058	74.023
2059	74.529
2060	74.764
2061	74.598
2062	74.234
2063	73.733
2064	73.219
2065	72.802
2066	72.359
2067	72.016
2068	71.793
2069	71.695
2070	71.718
2071	71.677
2072	71.782
2073	72.003
2074	72.299
2075	72.641
2076	72.822
2077	73.06
2078	73.356
2079	73.717
2080	74.143
2081	74.394
2082	74.711
2083	75.104
2084	75.552
2085	76.021
2086	76.3
2087	76.661
2088	77.028
2089	77.37
2090	77.721
2091	77.882
2092	78.018
2093	78.189
2094	78.442
2095	78.765
2096	78.78
2097	78.889
2098	79.074
2099	79.298
2100	79.544