Year	Number
1950	80.142
1951	79.984
1952	80.052
1953	79.797
1954	79.144
1955	78.259
1956	78.767
1957	78.653
1958	78.291
1959	78.032
1960	78.01
1961	78.894
1962	79.867
1963	80.829
1964	81.576
1965	82.025
1966	83.154
1967	83.913
1968	84.384
1969	84.691
1970	84.913
1971	85.844
1972	86.565
1973	87.114
1974	87.523
1975	87.821
1976	88.782
1977	89.465
1978	89.942
1979	90.322
1980	90.685
1981	91.582
1982	92.396
1983	93.057
1984	93.323
1985	92.919
1986	93.575
1987	93.843
1988	93.669
1989	93.124
1990	92.333
1991	91.984
1992	91.114
1993	89.969
1994	89.031
1995	88.872
1996	88.256
1997	87.747
1998	87.447
1999	87.087
2000	86.32
2001	86.65
2002	86.728
2003	86.551
2004	86.346
2005	86.355
2006	86.636
2007	86.868
2008	87.05
2009	87.022
2010	86.634
2011	86.277
2012	85.701
2013	84.9
2014	83.932
2015	82.873
2016	81.942
2017	80.936
2018	79.874
2019	78.772
2020	77.652
2021	76.762
2022	75.815
2023	74.851
2024	73.915
2025	73.028
2026	72.33
2027	71.65
2028	70.984
2029	70.316
2030	69.641
2031	69.11
2032	68.547
2033	67.962
2034	67.367
2035	66.769
2036	66.285
2037	65.769
2038	65.229
2039	64.673
2040	64.109
2041	63.632
2042	63.132
2043	62.614
2044	62.084
2045	61.548
2046	61.108
2047	60.641
2048	60.157
2049	59.664
2050	59.172
2051	58.761
2052	58.341
2053	57.914
2054	57.476
2055	57.028
2056	56.663
2057	56.275
2058	55.883
2059	55.511
2060	55.171
2061	54.941
2062	54.719
2063	54.509
2064	54.314
2065	54.136
2066	54.043
2067	53.949
2068	53.852
2069	53.751
2070	53.647
2071	53.608
2072	53.552
2073	53.48
2074	53.396
2075	53.301
2076	53.257
2077	53.189
2078	53.105
2079	53.019
2080	52.939
2081	52.91
2082	52.872
2083	52.831
2084	52.79
2085	52.753
2086	52.773
2087	52.781
2088	52.785
2089	52.794
2090	52.812
2091	52.885
2092	52.952
2093	53.019
2094	53.087
2095	53.16
2096	53.286
2097	53.404
2098	53.517
2099	53.63
2100	53.745