Year	Number
1950	56.46
1951	57.712
1952	59.614
1953	61.645
1954	63.703
1955	65.891
1956	69.213
1957	72.216
1958	75.157
1959	78.203
1960	81.346
1961	84.512
1962	87.65
1963	90.585
1964	93.036
1965	94.854
1966	96.307
1967	97.169
1968	97.458
1969	97.275
1970	96.717
1971	95.981
1972	94.93
1973	93.644
1974	92.187
1975	90.612
1976	89.888
1977	88.954
1978	87.9
1979	86.844
1980	85.849
1981	84.61
1982	83.51
1983	82.496
1984	81.478
1985	80.425
1986	79.572
1987	78.626
1988	77.636
1989	76.674
1990	75.761
1991	74.976
1992	74.19
1993	73.338
1994	72.283
1995	70.939
1996	69.591
1997	67.79
1998	65.698
1999	63.558
2000	61.501
2001	58.976
2002	56.864
2003	54.957
2004	52.994
2005	50.916
2006	49.281
2007	47.511
2008	45.782
2009	44.345
2010	43.31
2011	42.68
2012	42.32
2013	42.22
2014	42.305
2015	42.511
2016	42.839
2017	43.276
2018	43.78
2019	44.306
2020	44.827
2021	45.306
2022	45.782
2023	46.23
2024	46.632
2025	46.982
2026	47.287
2027	47.549
2028	47.774
2029	47.985
2030	48.205
2031	48.426
2032	48.664
2033	48.936
2034	49.262
2035	49.658
2036	50.111
2037	50.63
2038	51.214
2039	51.86
2040	52.568
2041	53.291
2042	54.059
2043	54.886
2044	55.783
2045	56.748
2046	57.701
2047	58.709
2048	59.77
2049	60.877
2050	62.027
2051	63.128
2052	64.256
2053	65.41
2054	66.59
2055	67.796
2056	68.927
2057	70.088
2058	71.201
2059	72.145
2060	72.848
2061	73.195
2062	73.313
2063	73.272
2064	73.175
2065	73.089
2066	72.876
2067	72.681
2068	72.532
2069	72.456
2070	72.482
2071	72.47
2072	72.577
2073	72.8
2074	73.126
2075	73.54
2076	73.89
2077	74.338
2078	74.862
2079	75.427
2080	76.007
2081	76.44
2082	76.896
2083	77.371
2084	77.838
2085	78.272
2086	78.514
2087	78.768
2088	78.992
2089	79.171
2090	79.333
2091	79.329
2092	79.296
2093	79.277
2094	79.316
2095	79.418
2096	79.301
2097	79.266
2098	79.305
2099	79.397
2100	79.526