Era
1971-
Since 1971
85
1971-1981
42
1945-
26
1971-1990
23
1961-
17
1952-
14
1981-2001
13
Since 1945
11
1981-
10
1986-
9
1990-
9
1952-1998
7
1959-1990
7
1971-1991
7
20th century
7
Since 1952
6
1981-1993
5
21st century
5
1918-
4
1918-1945
4
1945-1989
4
1960-
4
1959-
3
1965-
3
1970-
3
1971 - 1990
3
1971-1975
3
1971-1986
3
1975-
3
1980-
3
1918-1952
2
1960-1980
2
1961-1971
2
1970-1971
2
1971-1988
2
1971-2001
2
1975-1985
2
1980-1984
2
1981 - 2001
2
2001-2009
2
Since 1918
2
Since 1965
2
Since 1975
2
1900 - 1999
1
1900-1999
1
1912-2004
1
1918
1
1918 - 1990
1
1922-1993
1
more ...