Year	Number
1950	49.657
1951	49.942
1952	50.228
1953	50.485
1954	50.715
1955	50.914
1956	51.166
1957	51.391
1958	51.61
1959	51.902
1960	52.348
1961	53.318
1962	54.235
1963	55.186
1964	56.245
1965	57.415
1966	58.663
1967	59.94
1968	61.147
1969	62.112
1970	62.722
1971	63.126
1972	63.125
1973	62.76
1974	62.13
1975	61.297
1976	60.466
1977	59.558
1978	58.478
1979	57.109
1980	55.444
1981	53.832
1982	52.013
1983	50.199
1984	48.648
1985	47.487
1986	46.98
1987	46.653
1988	46.499
1989	46.49
1990	46.599
1991	46.99
1992	47.571
1993	48.226
1994	48.731
1995	48.929
1996	48.995
1997	48.711
1998	48.207
1999	47.727
2000	47.414
2001	47.195
2002	47.139
2003	47.204
2004	47.28
2005	47.311
2006	47.48
2007	47.639
2008	47.781
2009	47.927
2010	48.098
2011	48.334
2012	48.548
2013	48.764
2014	48.979
2015	49.18
2016	49.471
2017	49.8
2018	50.196
2019	50.706
2020	51.367
2021	52.183
2022	53.152
2023	54.258
2024	55.478
2025	56.792
2026	58.139
2027	59.568
2028	61.067
2029	62.619
2030	64.204
2031	65.703
2032	67.225
2033	68.723
2034	70.114
2035	71.332
2036	72.25
2037	73.031
2038	73.678
2039	74.209
2040	74.66
2041	74.899
2042	75.073
2043	75.246
2044	75.514
2045	75.936
2046	76.29
2047	76.809
2048	77.467
2049	78.195
2050	78.936
2051	79.447
2052	79.992
2053	80.585
2054	81.243
2055	81.969
2056	82.534
2057	83.2
2058	83.916
2059	84.582
2060	85.128
2061	85.355
2062	85.526
2063	85.628
2064	85.672
2065	85.689
2066	85.467
2067	85.245
2068	85.032
2069	84.846
2070	84.7
2071	84.288
2072	83.928
2073	83.655
2074	83.488
2075	83.409
2076	83.097
2077	82.93
2078	82.874
2079	82.9
2080	83.016
2081	82.945
2082	82.983
2083	83.148
2084	83.43
2085	83.798
2086	83.937
2087	84.199
2088	84.543
2089	84.935
2090	85.38
2091	85.582
2092	85.833
2093	86.146
2094	86.524
2095	86.953
2096	87.072
2097	87.251
2098	87.477
2099	87.739
2100	88.033