Era
1991-
1985-1991
986
Since 1991
819
Since 1985
405
20th century
213
1945-1991
147
1931-2007
116
1953-1985
101
1970-1991
97
21st century
96
1986-1991
95
Since 1900
92
1989-
89
1931-2022
82
1931-
75
1952-
61
Since 1945
60
1801-1917
59
Attempted coup, 1991
46
Since 1989
45
Since 1953
42
Revolution, 1917-1921
38
Since 1970
38
Since 1917
30
1991-2014
28
1861-1917
27
Nicholas II, 1894-1917
26
1900-1999
25
Since 1986
25
Since 1801
23
1894-1917
20
Since 1894
19
1878-1953
17
1917-1991
16
1945-
16
1985 - 1991
14
1923-2005
13
1946-
13
Since 1976
13
1925-1953
12
1976-2002
12
1991-2000
12
19th century
12
1940-1991
10
1990-
10
20e siècle
10
1933-
9
1976-
9
1917-1936
8
1939-1945
8
more ...