Era
20th century
12
1843-1916
4
19th century
3
Alfonso XIII, 1886-1931
3
1926-2016
2
21st century
2
1564-1616
1
1743-1826
1
1759-1849
1
1845-1924
1
1847-1944
1
1854-1921
1
1864-1910
1
1874-1946
1
1878-1963
1
1882-1941
1
1899-1961
1
18th century
1
1910-1946
1
1910-1999
1
1917-1973
1
1918-1964
1
1920-2005
1
1921-1944
1
1933-1959
1
1951-1969
1
1977-
1
1986-
1
Allied occupation, 1945-1952
1
American occupation, 1915-1934
1
German occupation, 1940-1945
1
To 1847
1