Year	Number
1950	78.4
1951	79.747
1952	80.962
1953	82.289
1954	83.573
1955	84.607
1956	85.534
1957	86.153
1958	86.425
1959	86.446
1960	86.327
1961	86.707
1962	87.229
1963	87.793
1964	88.105
1965	87.921
1966	88.008
1967	87.255
1968	86.032
1969	84.871
1970	84.001
1971	81.222
1972	79.321
1973	77.811
1974	76.061
1975	73.869
1976	72.244
1977	70.058
1978	67.772
1979	66.041
1980	65.12
1981	64.664
1982	64.915
1983	65.579
1984	66.12
1985	66.23
1986	66.861
1987	66.782
1988	66.21
1989	65.521
1990	64.876
1991	63.532
1992	62.488
1993	61.479
1994	60.132
1995	58.309
1996	56.3
1997	54.001
1998	51.565
1999	49.276
2000	47.296
2001	45.503
2002	43.991
2003	42.758
2004	41.769
2005	41.004
2006	40.627
2007	40.424
2008	40.404
2009	40.562
2010	40.874
2011	41.256
2012	41.714
2013	42.225
2014	42.748
2015	43.249
2016	43.769
2017	44.252
2018	44.674
2019	45.034
2020	45.339
2021	45.561
2022	45.722
2023	45.837
2024	45.946
2025	46.082
2026	46.365
2027	46.673
2028	46.958
2029	47.152
2030	47.224
2031	47.309
2032	47.281
2033	47.202
2034	47.154
2035	47.183
2036	47.42
2037	47.72
2038	48.074
2039	48.458
2040	48.864
2041	49.439
2042	50.005
2043	50.615
2044	51.354
2045	52.268
2046	53.491
2047	54.858
2048	56.28
2049	57.631
2050	58.825
2051	60.025
2052	61.056
2053	61.904
2054	62.549
2055	62.975
2056	63.332
2057	63.477
2058	63.43
2059	63.225
2060	62.906
2061	62.639
2062	62.265
2063	61.841
2064	61.437
2065	61.091
2066	60.981
2067	60.925
2068	60.923
2069	60.981
2070	61.105
2071	61.505
2072	61.953
2073	62.451
2074	62.973
2075	63.487
2076	64.197
2077	64.908
2078	65.581
2079	66.17
2080	66.647
2081	67.208
2082	67.668
2083	68.024
2084	68.277
2085	68.43
2086	68.606
2087	68.687
2088	68.683
2089	68.619
2090	68.511
2091	68.451
2092	68.347
2093	68.221
2094	68.095
2095	67.979
2096	67.949
2097	67.936
2098	67.95
2099	67.994
2100	68.062