27
1862 1866
1871
1875
1879
1884
1888 1892
1897
1901
0
1
1
2
2
3
3
3
4 28
1905 1910
1914
1919
1923
1928
1932 1936
1941
1945
0
1
1
2
2
3
3
4
4 29
1950 1954
1959
1963
1968
1972
1977 1982
1986
1991
0
1
1
2
2
3
3
4
4 30
1995 2000
2004
2009
2014
2018
2023 2028
2032
2037
0
1
1
2
2
3
3
4
4