Year	Number
1950	79.98
1951	80.705
1952	81.039
1953	81.068
1954	80.876
1955	80.519
1956	81.363
1957	81.84
1958	82.042
1959	82.057
1960	81.939
1961	82.95
1962	83.612
1963	84.011
1964	84.217
1965	84.267
1966	85.269
1967	85.945
1968	86.351
1969	86.521
1970	86.484
1971	87.315
1972	87.766
1973	87.942
1974	87.976
1975	87.958
1976	88.487
1977	88.846
1978	89.047
1979	89.047
1980	88.808
1981	90.368
1982	91.539
1983	92.344
1984	92.792
1985	92.85
1986	95.371
1987	97.482
1988	99.196
1989	100.688
1990	102.173
1991	99.295
1992	96.895
1993	94.982
1994	93.394
1995	91.959
1996	92.496
1997	92.701
1998	92.668
1999	92.576
2000	92.542
2001	93.31
2002	93.957
2003	94.501
2004	94.901
2005	95.126
2006	95.912
2007	96.436
2008	96.725
2009	96.812
2010	96.714
2011	96.722
2012	96.515
2013	96.108
2014	95.514
2015	94.75
2016	94.22
2017	93.487
2018	92.604
2019	91.635
2020	90.62
2021	89.8
2022	88.926
2023	88.005
2024	87.037
2025	86.031
2026	85.224
2027	84.345
2028	83.423
2029	82.487
2030	81.551
2031	80.755
2032	79.932
2033	79.085
2034	78.207
2035	77.297
2036	76.477
2037	75.613
2038	74.719
2039	73.813
2040	72.905
2041	72.075
2042	71.233
2043	70.381
2044	69.524
2045	68.669
2046	67.893
2047	67.112
2048	66.33
2049	65.549
2050	64.777
2051	64.086
2052	63.395
2053	62.715
2054	62.056
2055	61.425
2056	60.885
2057	60.36
2058	59.855
2059	59.377
2060	58.93
2061	58.558
2062	58.206
2063	57.875
2064	57.565
2065	57.278
2066	57.051
2067	56.833
2068	56.626
2069	56.434
2070	56.26
2071	56.121
2072	55.99
2073	55.867
2074	55.753
2075	55.648
2076	55.567
2077	55.487
2078	55.409
2079	55.337
2080	55.274
2081	55.222
2082	55.171
2083	55.124
2084	55.088
2085	55.066
2086	55.054
2087	55.047
2088	55.049
2089	55.064
2090	55.093
2091	55.13
2092	55.173
2093	55.225
2094	55.29
2095	55.37
2096	55.451
2097	55.54
2098	55.64
2099	55.752
2100	55.877