Era
1991-
Since 1991
470
1985-1991
459
Since 1985
211
20th century
151
1945-1991
76
Since 1900
74
1931-2007
65
21st century
63
1953-1985
56
1970-1991
52
1931-
39
1989-
39
1931-2022
38
Attempted coup, 1991
37
Since 1945
35
1952-
34
Since 1953
31
1801-1917
30
Since 1917
28
Revolution, 1917-1921
27
Since 1970
22
1986-1991
21
1900-1999
20
Since 1989
19
Nicholas II, 1894-1917
18
Since 1801
18
1991-2014
17
Since 1894
14
1923-2005
12
1878-1953
11
1946-
11
1917-1991
10
1925-1953
10
1945-
10
1861-1917
9
1933-
9
19th century
9
20e siècle
9
1894-1917
8
1894-1971
7
1900 - 1999
7
1917-1970
7
1940-1991
7
Geschichte
7
Since 1925
7
1917-
6
1985 - 1991
6
1991
6
1991-2000
6
more ...