Year	Number
1950	50.62
1951	51.437
1952	51.817
1953	51.993
1954	52.026
1955	51.816
1956	52.425
1957	52.649
1958	52.809
1959	53.011
1960	53.104
1961	53.438
1962	53.347
1963	53.355
1964	53.675
1965	54.176
1966	54.242
1967	54.078
1968	54.186
1969	54.654
1970	55.242
1971	55.289
1972	54.986
1973	54.433
1974	53.699
1975	52.833
1976	52.568
1977	52.138
1978	51.539
1979	50.775
1980	49.899
1981	49.04
1982	48.061
1983	47.109
1984	46.29
1985	45.637
1986	45.273
1987	44.948
1988	44.722
1989	44.542
1990	44.343
1991	44.738
1992	45.015
1993	45.252
1994	45.523
1995	45.8
1996	45.937
1997	46.065
1998	46.156
1999	46.139
2000	45.992
2001	45.943
2002	45.805
2003	45.596
2004	45.372
2005	45.216
2006	45.418
2007	45.496
2008	45.44
2009	45.301
2010	45.181
2011	45.424
2012	45.717
2013	46.081
2014	46.516
2015	47.009
2016	47.571
2017	48.206
2018	48.892
2019	49.596
2020	50.307
2021	51.077
2022	51.831
2023	52.608
2024	53.459
2025	54.409
2026	55.449
2027	56.567
2028	57.739
2029	58.93
2030	60.117
2031	61.26
2032	62.384
2033	63.473
2034	64.518
2035	65.5
2036	66.338
2037	67.097
2038	67.788
2039	68.444
2040	69.089
2041	69.617
2042	70.116
2043	70.602
2044	71.081
2045	71.555
2046	71.918
2047	72.286
2048	72.645
2049	72.977
2050	73.281
2051	73.473
2052	73.633
2053	73.787
2054	73.98
2055	74.216
2056	74.408
2057	74.66
2058	74.95
2059	75.228
2060	75.483
2061	75.635
2062	75.783
2063	75.931
2064	76.083
2065	76.247
2066	76.316
2067	76.395
2068	76.503
2069	76.65
2070	76.831
2071	76.902
2072	77.028
2073	77.198
2074	77.392
2075	77.604
2076	77.676
2077	77.79
2078	77.932
2079	78.104
2080	78.309
2081	78.374
2082	78.483
2083	78.645
2084	78.855
2085	79.112
2086	79.213
2087	79.377
2088	79.591
2089	79.84
2090	80.139
2091	80.278
2092	80.471
2093	80.72
2094	81.026
2095	81.39
2096	81.559
2097	81.789
2098	82.075
2099	82.405
2100	82.776