Year	Total
1800	6.45
1801	6.413
1802	6.376
1803	6.339
1804	6.302
1805	6.265
1806	6.228
1807	6.191
1808	6.116
1809	6.041
1810	5.966
1811	5.891
1812	5.816
1813	6.006
1814	6.196
1815	6.386
1816	6.577
1817	6.767
1818	6.794
1819	6.821
1820	6.847
1821	6.874
1822	6.901
1823	6.96
1824	7.019
1825	7.078
1826	7.137
1827	7.196
1828	7.102
1829	7.008
1830	6.914
1831	6.821
1832	6.727
1833	6.595
1834	6.464
1835	6.333
1836	6.202
1837	6.07
1838	6.014
1839	5.958
1840	5.901
1841	5.845
1842	5.789
1843	5.867
1844	5.944
1845	6.022
1846	6.1
1847	6.177
1848	6.231
1849	6.285
1850	6.338
1851	6.392
1852	6.445
1853	6.437
1854	6.429
1855	6.421
1856	6.413
1857	6.405
1858	6.424
1859	6.443
1860	6.461
1861	6.48
1862	6.499
1863	6.472
1864	6.445
1865	6.419
1866	6.392
1867	6.365
1868	6.394
1869	6.424
1870	6.453
1871	6.483
1872	6.512
1873	6.432
1874	6.352
1875	6.271
1876	6.191
1877	6.066
1878	5.941
1879	5.816
1880	5.974
1881	6.133
1882	6.291
1883	6.45
1884	6.608
1885	6.767
1886	6.901
1887	7.196
1888	6.727
1889	6.07
1890	5.789
1891	6.177
1892	6.445
1893	6.405
1894	6.499
1895	6.365
1896	6.512
1897	6.566
1898	6.378
1899	6.37
1900	6.362
1901	6.354
1902	6.346
1903	6.338
1904	5.065
1905	5.481
1906	4.864
1907	5.548
1908	5.802
1909	5.172
1910	5.829
1911	5.936
1912	5.923
1913	5.963
1914	6.325
1915	5.95
1916	6.003
1917	6.043
1918	5.816
1919	5.333
1920	5.842
1921	5.95
1922	5.99
1923	6.057
1924	5.985
1925	5.914
1926	5.842
1927	6.07
1928	6.097
1929	6.097
1930	5.735
1931	5.735
1932	5.708
1933	5.722
1934	5.507
1935	5.534
1936	5.655
1937	5.802
1938	5.682
1939	5.623
1940	5.564
1941	5.506
1942	5.447
1943	5.388
1944	5.33
1945	5.271
1946	5.213
1947	5.427
1948	5.561
1949	6.505
1950	7.448
1951	7.444
1952	7.432
1953	7.416
1954	7.394
1955	7.366
1956	7.334
1957	7.296
1958	7.252
1959	7.203
1960	7.148
1961	7.087
1962	7.02
1963	6.947
1964	6.867
1965	6.781
1966	6.689
1967	6.589
1968	6.485
1969	6.376
1970	6.264
1971	6.152
1972	6.041
1973	5.931
1974	5.824
1975	5.718
1976	5.613
1977	5.506
1978	5.399
1979	5.29
1980	5.183
1981	5.078
1982	4.978
1983	4.883
1984	4.795
1985	4.712
1986	4.632
1987	4.554
1988	4.476
1989	4.397
1990	4.32
1991	4.246
1992	4.177
1993	4.113
1994	4.056
1995	4.006
1996	3.962
1997	3.923
1998	3.888
1999	3.852
2000	3.813
2001	3.766
2002	3.709
2003	3.642
2004	3.566
2005	3.485
2006	3.403
2007	3.326
2008	3.257
2009	3.199
2010	3.151
2011	3.111
2012	3.076
2013	3.043
2014	3.01
2015	2.977
2016	2.943
2017	2.909
2018	2.877
2019	2.845
2020	2.814
2021	2.784
2022	2.755
2023	2.726
2024	2.698
2030	2.546
2040	2.335
2050	2.161
2070	1.944
2080	1.894
2099	1.854