Era
20th century
130
1980-
107
1945-
88
1985-
54
2002-
49
1979-
46
1948-1980
43
1982-
42
1983-2002
42
21st century
41
1955-
39
1948-
36
1959-1990
33
1979-1990
33
1970-1973
30
1983-
30
Since 1980
29
Since 1945
27
1955-1983
25
19th century
24
1910-1946
21
1900-1999
19
1959-
19
1985-2002
19
1988-
19
1968-
18
1970-
18
1970-1988
18
1990-
18
1945-1989
17
1974-
17
Colonial period, ca. 1600-1775
17
Since 1985
17
Since 1983
15
War of Independence, 1820-1829
15
1918-
14
1951-
14
1964-1985
14
1820-1829
13
1973-
13
1988-2000
13
1989-
13
Since 1979
13
1810-
12
1900 - 1999
12
1968-1980
12
1973-1988
12
1982-2006
12
1986-
12
1783-1830
11
more ...