Era
20th century
832
21st century
347
19th century
185
1974-
98
1939-1975
81
1980-
80
Siglo XX
78
2000-
73
Siglo 20
71
1945-
67
Civil War, 1936-1939
65
1989-
59
Since 1945
50
18th century
46
1975-1982
46
1931-1939
44
1943-
44
1982-
42
1955-1983
40
1988-
37
1988-2000
37
S XX
34
1975-
33
1886-1931
30
1945-1989
29
1970-1973
29
Siglo 21
29
16th century
28
1973-1988
28
17th century
26
1910-1946
26
1991-
25
Siglo XXI
25
1970-
24
Siglo XIX
22
Since 1989
22
1906-1975
20
1990-
18
2002-
18
1908-1973
17
1920-1970
17
1469-1527
16
1946-1974
16
To 1500
16
1817-1860
15
1943-1955
15
1999-
15
Republic, 1931-1939
15
1973-
14
1621-1665
13
more ...