Era
20th century
123
1993-
73
1917-1948
69
1948-
38
1973-1993
27
Since 1993
24
21st century
23
1696-1743
14
1948-1967
14
1979-
12
1902-1994
11
active 2nd century
11
1900 - 1999
10
1945-
10
1838-1933
9
1900-1999
9
Since 1948
9
1772-1811
8
1135-1204
7
1865-1935
7
1939-1945
7
1973-
7
1040-1105
6
1488-1575
6
1967-1993
6
2000-2099
6
Partition, 1947
6
approximately 1834-1909
6
1925-1994
5
Since 1979
5
approximately 1700-1760
5
1874-1952
3
1889-1984
3
1922-1995
3
1948-1949
3
1967
3
586 B.C.-70 A.D
3
-161 B.C
2
1619-1686
2
1725-1806
2
1785-1841
2
1800-
2
1877-1958
2
1880-1940
2
1886-1973
2
1889-1956
2
1924-
2
1929-2010
2
1967-1973
2
1986-
2
more ...