Year	Number
1950	73.703
1951	74.722
1952	76.499
1953	78.071
1954	79.063
1955	79.562
1956	81.543
1957	82.508
1958	83.028
1959	83.613
1960	84.423
1961	85.597
1962	87.028
1963	88.379
1964	89.136
1965	89.095
1966	89.243
1967	88.651
1968	87.576
1969	86.407
1970	85.36
1971	84.81
1972	84.328
1973	83.891
1974	83.452
1975	83.001
1976	82.895
1977	82.641
1978	82.252
1979	81.719
1980	81.033
1981	80.145
1982	79.086
1983	77.898
1984	76.611
1985	75.244
1986	74.19
1987	72.988
1988	71.675
1989	70.305
1990	68.912
1991	67.578
1992	66.248
1993	64.934
1994	63.664
1995	62.47
1996	61.465
1997	60.558
1998	59.713
1999	58.874
2000	58.012
2001	57.327
2002	56.535
2003	55.71
2004	54.939
2005	54.249
2006	53.538
2007	52.922
2008	52.361
2009	51.819
2010	51.31
2011	50.92
2012	50.57
2013	50.269
2014	50
2015	49.721
2016	49.467
2017	49.143
2018	48.79
2019	48.489
2020	48.294
2021	48.042
2022	47.96
2023	47.995
2024	48.048
2025	48.073
2026	48.122
2027	48.149
2028	48.173
2029	48.244
2030	48.387
2031	48.528
2032	48.714
2033	48.959
2034	49.268
2035	49.645
2036	50.032
2037	50.483
2038	50.995
2039	51.564
2040	52.189
2041	52.796
2042	53.447
2043	54.143
2044	54.884
2045	55.664
2046	56.379
2047	57.13
2048	57.903
2049	58.681
2050	59.453
2051	60.108
2052	60.762
2053	61.414
2054	62.065
2055	62.716
2056	63.229
2057	63.744
2058	64.279
2059	64.858
2060	65.498
2061	66.034
2062	66.64
2063	67.303
2064	67.996
2065	68.697
2066	69.233
2067	69.797
2068	70.388
2069	71.003
2070	71.637
2071	72.103
2072	72.607
2073	73.155
2074	73.751
2075	74.393
2076	74.886
2077	75.457
2078	76.084
2079	76.731
2080	77.376
2081	77.81
2082	78.27
2083	78.754
2084	79.258
2085	79.784
2086	80.072
2087	80.402
2088	80.778
2089	81.193
2090	81.635
2091	81.823
2092	82.078
2093	82.386
2094	82.734
2095	83.115
2096	83.258
2097	83.465
2098	83.733
2099	84.058
2100	84.433