Year	Number
1950	77.18
1951	79.645
1952	82.755
1953	85.669
1954	87.861
1955	89.272
1956	91.515
1957	92.691
1958	93.268
1959	93.681
1960	94.044
1961	94.99
1962	96.025
1963	96.802
1964	96.898
1965	96.26
1966	97.154
1967	97.253
1968	96.799
1969	96.054
1970	94.98
1971	93.337
1972	91.418
1973	89.22
1974	86.852
1975	84.475
1976	81.542
1977	79.062
1978	76.83
1979	74.625
1980	72.412
1981	69.69
1982	67.243
1983	65.146
1984	63.547
1985	62.436
1986	61.107
1987	60.078
1988	59.225
1989	58.392
1990	57.538
1991	57.303
1992	56.889
1993	56.39
1994	55.949
1995	55.622
1996	55.361
1997	55.238
1998	55.132
1999	54.921
2000	54.567
2001	54.228
2002	53.787
2003	53.236
2004	52.598
2005	51.921
2006	51.887
2007	51.784
2008	51.631
2009	51.503
2010	51.454
2011	51.199
2012	51.119
2013	51.136
2014	51.174
2015	51.236
2016	51.331
2017	51.475
2018	51.651
2019	51.872
2020	52.166
2021	52.51
2022	52.901
2023	53.377
2024	53.985
2025	54.753
2026	55.608
2027	56.612
2028	57.737
2029	58.957
2030	60.25
2031	61.538
2032	62.899
2033	64.27
2034	65.565
2035	66.739
2036	67.644
2037	68.417
2038	69.071
2039	69.655
2040	70.205
2041	70.542
2042	70.847
2043	71.111
2044	71.321
2045	71.467
2046	71.356
2047	71.226
2048	71.091
2049	70.994
2050	70.986
2051	70.878
2052	70.878
2053	70.979
2054	71.161
2055	71.403
2056	71.499
2057	71.699
2058	71.987
2059	72.341
2060	72.753
2061	73.048
2062	73.443
2063	73.922
2064	74.51
2065	75.243
2066	75.921
2067	76.746
2068	77.7
2069	78.733
2070	79.796
2071	80.617
2072	81.482
2073	82.363
2074	83.248
2075	84.152
2076	84.779
2077	85.418
2078	86.09
2079	86.807
2080	87.561
2081	87.996
2082	88.505
2083	89.061
2084	89.647
2085	90.272
2086	90.592
2087	90.984
2088	91.441
2089	91.966
2090	92.567
2091	92.842
2092	93.207
2093	93.665
2094	94.203
2095	94.807
2096	95.032
2097	95.377
2098	95.816
2099	96.304
2100	96.821