Cyfnod
1945-
287
21st century
272
20th century
260
1933-1945
131
2000-
121
1980-
105
1991-
105
1960-
103
1976-
103
1976-2000
89
1989-
87
1947-
85
2002-
82
2000-2099
75
1976-2002
72
20e siècle
72
1900-1999
69
1979-
69
1993-
68
1990-
60
Since 1945
59
1917-1936
54
Since 2000
50
1977-
47
1981-1993
45
1918-1945
42
1981-
41
1985-1991
41
1988-
40
1945-1989
39
1986-1991
39
2009-
36
1970-
35
19th century
35
1949-
34
Since 1960
34
Since 1991
32
1981-1989
31
2001-2009
31
1997-
30
1952-
29
1964-
29
1993-2001
29
1917-1928
28
21e siècle
28
1975-
27
1985-
27
1979-1997
26
1982-
26
1945-1964
25
rhagor ...