1885-1890   [1885  1886  1887  1888  1889  1890]

1891-1895   [1891  1892  1893  1894  1895]

1896-1900   [1896  1897  1898  1899  1900]

1901-1905   [1901  1902  1903  1904  1905]

1906-1910   [1906  1907  1908  1909  1910]

1911-1915   [1911  1912  1913  1914  1915]

1916-1920   [1916  1917  1918  1919  1920]

1921-1925   [1921  1922  1923  1924  1925]

1926-1930   [1926  1927  1928  1929  1930]

1931-1935   [1931  1932  1933  1934  1935]

1936-1940   [1936  1937  1938  1939  1940]

1941-1945   [1941  1942  1943  1944  1945]

1946-1950   [1946  1947  1948  1949  1950]

1951-1955   [1951  1952  1953  1954  1955]

1956-1960   [1956  1957  1958  1959  1960]

1961-1965   [1961  1962  1963  1964  1965]

1966-1970   [1966  1967  1968  1969  1970]

1971-1975   [1971  1972  1973  1974  1975]

1976-1980   [1976  1977  1978  1979  1980]

1981-1985   [1981  1982  1983  1984  1985]

1986-1990   [1986  1987  1988  1989  1990]

1991-1995   [1991  1992  1993  1994  1995]