Era
20th century
414
21st century
203
19th century
117
1818-1883
56
18th century
51
Siglo XX
49
Siglo 20
47
S XX
31
1994-
25
16th century
24
17th century
24
1970-
23
1982-
23
Siglo XXI
21
Siglo 21
19
2008-
18
To 1500
17
1864-1920
15
1988-
15
Siglo 19
14
1975-
13
1927-1998
12
1939-1975
12
S XXI
10
Siglo XIX
10
1930-2002
9
1980-
9
1983-
9
2000-
9
Civil War, 1936-1939
9
1858-1917
8
1891-1937
8
1955-1983
8
1883-1946
7
1945-
7
1973-
7
1973-1988
7
1974-
7
1858-1918
6
1871-1919
6
1990-
6
1988-2000
5
Medieval, 500-1500
5
Republic, 1931-1939
5
S XIX
5
Siglo XVIII
5
1810-
4
1870-1924
4
1870-1940
4
1886-1931
4
more ...