Year	Number
1950	55.767
1951	55.557
1952	55.529
1953	55.35
1954	55.159
1955	55.216
1956	56.537
1957	57.554
1958	58.584
1959	59.806
1960	61.201
1961	62.577
1962	64.127
1963	65.609
1964	66.641
1965	67.016
1966	66.967
1967	66.355
1968	65.253
1969	63.895
1970	62.46
1971	60.567
1972	59.007
1973	57.735
1974	56.588
1975	55.454
1976	55.046
1977	54.373
1978	53.584
1979	52.948
1980	52.614
1981	52.43
1982	52.492
1983	52.716
1984	52.981
1985	53.26
1986	54.057
1987	54.92
1988	55.715
1989	56.347
1990	56.758
1991	57.166
1992	57.181
1993	56.834
1994	56.196
1995	55.308
1996	54.318
1997	53.25
1998	52.054
1999	50.639
2000	48.982
2001	47.246
2002	45.339
2003	43.362
2004	41.467
2005	39.747
2006	38.817
2007	38.02
2008	37.367
2009	36.821
2010	36.357
2011	35.862
2012	35.341
2013	34.852
2014	34.552
2015	34.574
2016	35.269
2017	36.308
2018	37.538
2019	38.712
2020	39.676
2021	40.534
2022	41.214
2023	41.748
2024	42.219
2025	42.684
2026	43.312
2027	43.899
2028	44.387
2029	44.699
2030	44.792
2031	44.803
2032	44.616
2033	44.321
2034	44.032
2035	43.82
2036	43.796
2037	43.854
2038	43.978
2039	44.155
2040	44.388
2041	44.91
2042	45.481
2043	46.135
2044	46.899
2045	47.763
2046	48.966
2047	50.245
2048	51.647
2049	53.268
2050	55.167
2051	57.581
2052	60.279
2053	63.118
2054	65.835
2055	68.221
2056	70.431
2057	72.278
2058	73.742
2059	74.849
2060	75.627
2061	76.202
2062	76.407
2063	76.297
2064	75.946
2065	75.407
2066	74.848
2067	74.113
2068	73.287
2069	72.481
2070	71.773
2071	71.436
2072	71.199
2073	71.046
2074	70.95
2075	70.893
2076	71.261
2077	71.672
2078	72.103
2079	72.483
2080	72.739
2081	73.25
2082	73.687
2083	74.017
2084	74.215
2085	74.281
2086	74.569
2087	74.757
2088	74.845
2089	74.84
2090	74.747
2091	74.734
2092	74.658
2093	74.513
2094	74.304
2095	74.042
2096	73.811
2097	73.539
2098	73.252
2099	72.977
2100	72.722