Year	Number
1950	58.45
1951	59.278
1952	59.546
1953	60.056
1954	60.931
1955	61.959
1956	62.12
1957	62.836
1958	63.608
1959	64.009
1960	63.906
1961	63.924
1962	63.341
1963	62.418
1964	61.578
1965	61.021
1966	60.766
1967	60.619
1968	60.542
1969	60.401
1970	60.115
1971	59.801
1972	59.321
1973	58.702
1974	57.972
1975	57.139
1976	56.098
1977	55.033
1978	53.899
1979	52.662
1980	51.342
1981	50.084
1982	48.816
1983	47.607
1984	46.551
1985	45.706
1986	45.239
1987	44.891
1988	44.675
1989	44.581
1990	44.591
1991	44.721
1992	44.926
1993	45.197
1994	45.5
1995	45.798
1996	46.137
1997	46.45
1998	46.721
1999	46.951
2000	47.145
2001	47.301
2002	47.47
2003	47.632
2004	47.75
2005	47.801
2006	48.03
2007	48.158
2008	48.285
2009	48.566
2010	49.085
2011	49.671
2012	50.511
2013	51.5
2014	52.454
2015	53.265
2016	53.991
2017	54.591
2018	55.134
2019	55.733
2020	56.46
2021	57.281
2022	58.192
2023	59.207
2024	60.323
2025	61.529
2026	62.732
2027	64.024
2028	65.386
2029	66.791
2030	68.214
2031	69.52
2032	70.833
2033	72.106
2034	73.276
2035	74.299
2036	75.007
2037	75.551
2038	75.962
2039	76.258
2040	76.434
2041	76.303
2042	76.106
2043	75.852
2044	75.575
2045	75.322
2046	74.964
2047	74.663
2048	74.442
2049	74.305
2050	74.244
2051	74.088
2052	74.04
2053	74.092
2054	74.221
2055	74.407
2056	74.485
2057	74.659
2058	74.915
2059	75.215
2060	75.527
2061	75.703
2062	75.937
2063	76.219
2064	76.545
2065	76.92
2066	77.185
2067	77.53
2068	77.924
2069	78.325
2070	78.704
2071	78.829
2072	78.946
2073	79.075
2074	79.235
2075	79.427
2076	79.354
2077	79.342
2078	79.393
2079	79.505
2080	79.679
2081	79.633
2082	79.688
2083	79.839
2084	80.072
2085	80.375
2086	80.448
2087	80.626
2088	80.897
2089	81.246
2090	81.664
2091	81.822
2092	82.066
2093	82.396
2094	82.801
2095	83.263
2096	83.423
2097	83.672
2098	83.997
2099	84.369
2100	84.774