Era
20th century
476
1900-1999
310
Revolution, 1917-1921
291
1985-1991
209
1939-1945
165
1917-1921
151
1917-1936
115
1953-1985
96
1900 - 1999
85
1975-1985
85
1986-1991
81
1989-
74
1991-
71
1945-1991
69
1945-1989
67
1917-1945
66
1945-
64
1985 - 1991
53
1801-1917
49
1970-1991
49
1936-1953
46
20e siècle
46
Since 1989
44
19th century
41
1917-
40
1981-1985
40
Since 1991
39
1917-1921 (Révolution)
36
1925-1953
36
1939 - 1945
35
1917 - 1921
33
Since 1945
33
1878-1953
32
Since 1917
32
21st century
31
1800-1999
28
1985-
27
1975-
26
Since 1985
24
1953 - 1985
23
1917-1970
22
German occupation, 1941-1944
21
1953-
20
1976-
20
1981-1989
19
1982-
19
1917-1953
18
1976-1980
18
February Revolution, 1917
18
1931-
17
more ...