Year	Number
1950	73.017
1951	76.139
1952	80.001
1953	83.633
1954	86.777
1955	89.472
1956	92.672
1957	94.887
1958	96.355
1959	97.26
1960	97.728
1961	100.328
1962	102.148
1963	103.527
1964	104.654
1965	105.541
1966	105.975
1967	106.367
1968	106.558
1969	106.379
1970	105.803
1971	107.041
1972	108.04
1973	108.737
1974	109.133
1975	109.231
1976	108.989
1977	108.237
1978	106.954
1979	105.503
1980	104.264
1981	101.824
1982	100.129
1983	98.879
1984	97.556
1985	95.927
1986	95.337
1987	94.248
1988	92.946
1989	91.782
1990	90.805
1991	90.352
1992	90.216
1993	90.126
1994	89.831
1995	89.331
1996	87.276
1997	85.118
1998	83.23
1999	81.789
2000	80.665
2001	79.321
2002	77.996
2003	76.593
2004	75.043
2005	73.353
2006	71.645
2007	69.948
2008	68.298
2009	66.745
2010	65.319
2011	63.35
2012	61.594
2013	59.952
2014	58.347
2015	56.781
2016	55.664
2017	54.502
2018	53.389
2019	52.428
2020	51.651
2021	51.159
2022	50.77
2023	50.465
2024	50.195
2025	49.934
2026	49.758
2027	49.581
2028	49.385
2029	49.15
2030	48.871
2031	48.621
2032	48.316
2033	47.971
2034	47.614
2035	47.267
2036	46.99
2037	46.71
2038	46.426
2039	46.13
2040	45.825
2041	45.594
2042	45.35
2043	45.114
2044	44.915
2045	44.774
2046	44.76
2047	44.778
2048	44.83
2049	44.917
2050	45.037
2051	45.262
2052	45.502
2053	45.762
2054	46.045
2055	46.355
2056	46.749
2057	47.148
2058	47.553
2059	47.967
2060	48.39
2061	48.873
2062	49.346
2063	49.809
2064	50.263
2065	50.705
2066	51.181
2067	51.635
2068	52.056
2069	52.429
2070	52.749
2071	53.061
2072	53.309
2073	53.518
2074	53.72
2075	53.935
2076	54.207
2077	54.476
2078	54.751
2079	55.041
2080	55.355
2081	55.744
2082	56.145
2083	56.558
2084	56.976
2085	57.398
2086	57.878
2087	58.353
2088	58.819
2089	59.277
2090	59.72
2091	60.203
2092	60.669
2093	61.118
2094	61.547
2095	61.954
2096	62.372
2097	62.771
2098	63.154
2099	63.52
2100	63.87