Year	Number
1950	74.767
1951	75.136
1952	75.535
1953	75.423
1954	74.86
1955	74.139
1956	77.447
1957	80.339
1958	83.008
1959	85.631
1960	88.237
1961	87.54
1962	87.03
1963	86.605
1964	86.057
1965	85.292
1966	84.157
1967	83.08
1968	81.959
1969	80.724
1970	79.334
1971	78.438
1972	77.266
1973	75.929
1974	74.566
1975	73.158
1976	71.429
1977	69.555
1978	67.577
1979	65.582
1980	63.616
1981	61.372
1982	59.788
1983	58.595
1984	57.436
1985	56.273
1986	55.941
1987	55.667
1988	56.041
1989	57.661
1990	60.615
1991	60.265
1992	60.544
1993	60.991
1994	61.111
1995	60.795
1996	59.409
1997	58.327
1998	57.64
1999	57.282
2000	56.982
2001	56.464
2002	55.855
2003	55.408
2004	55.233
2005	55.267
2006	54.466
2007	53.561
2008	52.558
2009	51.465
2010	50.301
2011	49.279
2012	48.228
2013	47.222
2014	46.346
2015	45.65
2016	45.234
2017	44.976
2018	44.86
2019	44.852
2020	44.947
2021	45.201
2022	45.547
2023	45.982
2024	46.472
2025	47.012
2026	47.607
2027	48.204
2028	48.869
2029	49.695
2030	50.733
2031	51.928
2032	53.309
2033	54.77
2034	56.131
2035	57.29
2036	58.2
2037	58.914
2038	59.436
2039	59.751
2040	59.884
2041	59.755
2042	59.422
2043	59.004
2044	58.659
2045	58.466
2046	58.327
2047	58.344
2048	58.474
2049	58.644
2050	58.809
2051	58.926
2052	59.069
2053	59.251
2054	59.501
2055	59.864
2056	60.277
2057	60.762
2058	61.332
2059	61.946
2060	62.566
2061	63.142
2062	63.774
2063	64.407
2064	65.006
2065	65.568
2066	66.09
2067	66.596
2068	67.083
2069	67.552
2070	68.017
2071	68.371
2072	68.712
2073	69.065
2074	69.463
2075	69.892
2076	70.174
2077	70.511
2078	70.887
2079	71.292
2080	71.724
2081	72.053
2082	72.423
2083	72.841
2084	73.321
2085	73.836
2086	74.196
2087	74.623
2088	75.093
2089	75.578
2090	76.065
2091	76.397
2092	76.76
2093	77.14
2094	77.543
2095	77.944
2096	78.139
2097	78.35
2098	78.579
2099	78.818
2100	79.066