Year	Total
1883	5.166
1884	5.279
1885	5.392
1886	5.505
1887	5.618
1888	5.731
1889	5.713
1890	5.694
1891	5.676
1892	5.658
1893	5.639
1894	5.621
1895	5.603
1896	5.584
1897	5.566
1898	5.548
1899	5.529
1900	5.511
1901	5.492
1902	5.474
1903	5.456
1904	5.44
1905	5.424
1906	5.408
1907	5.392
1908	5.377
1909	5.381
1910	5.385
1911	5.39
1912	5.394
1913	5.398
1914	5.443
1915	5.488
1916	5.533
1917	5.578
1918	5.622
1919	5.675
1920	5.728
1921	5.78
1922	5.833
1923	5.886
1924	6.001
1925	6.117
1926	6.232
1927	6.347
1928	6.463
1929	6.609
1930	6.755
1931	6.901
1932	7.047
1933	7.193
1934	7.29
1935	7.386
1936	7.483
1937	7.579
1938	7.676
1939	7.286
1940	6.896
1941	6.505
1942	6.115
1943	5.725
1944	5.901
1945	6.076
1946	6.252
1947	6.428
1948	6.604
1949	6.545
1950	6.487
1951	6.538
1952	6.62
1953	6.661
1954	6.661
1955	6.62
1956	6.538
1957	6.415
1958	6.254
1959	6.055
1960	5.821
1961	5.557
1962	5.27
1963	4.967
1964	4.658
1965	4.356
1966	4.074
1967	3.815
1968	3.582
1969	3.375
1970	3.19
1971	3.014
1972	2.836
1973	2.652
1974	2.461
1975	2.272
1976	2.096
1977	1.945
1978	1.827
1979	1.743
1980	1.82
1981	1.78
1982	1.74
1983	1.61
1984	1.62
1985	1.61
1986	1.43
1987	1.62
1988	1.96
1989	1.75
1990	1.83
1991	1.73
1992	1.72
1993	1.74
1994	1.71
1995	1.67
1996	1.66
1997	1.61
1998	1.48
1999	1.47
2000	1.6
2001	1.41
2002	1.37
2003	1.27
2004	1.26
2005	1.26
2006	1.28
2007	1.29
2008	1.28
2009	1.257
2010	1.261
2011	1.267
2012	1.275
2013	1.282
2014	1.289
2015	1.295
2016	1.3
2017	1.304
2018	1.309
2019	1.313
2020	1.317
2021	1.321
2022	1.324
2023	1.328
2024	1.331
2030	1.351
2040	1.378
2050	1.402
2070	1.438
2080	1.451
2099	1.476