Era
20th century
18
1945-
12
1973-
9
1885-1967
4
21st century
4
1950-
3
1523-1718
2
1862-1944
2
1872-1907
2
1905-
2
1914-2001
2
1950-1973
2
19th century
2
1707-1778
1
1718-1814
1
1849-1912
1
1853-1919
1
1872-1944
1
1885-1940
1
1898-1987
1
1905-1950
1
1916-1982
1
1918-
1
1927-1986
1
1934-
1
1956-
1
1968-
1
1970-
1
1981-
1
1989-
1
1997-
1
2003-
1
Colonial period, ca. 1600-1775
1
Gustavus II Adolphus, 1611-1632
1
Quaternary
1