Era
2010
2,308
2017
1,139
20th century
1,051
2016
985
2019
548
2018
512
2015
496
2020
428
1989
306
1970
281
2000
269
2014
266
1958-1969
252
2007
247
1900-1999
242
1990
205
21st century
159
1980
151
19th century
149
2013
146
1945-1989
102
2011
101
1910-1920
99
1914-1918
98
2012
87
1920
84
1917
79
1939-1945
72
1912-1945
68
1900 - 1999
66
Civil War, 1936-1939
62
1902-1994
61
Cultural Revolution, 1966-1976
60
1945-
58
2021
57
1987
56
1993
56
1950
55
1994
54
1918
52
1985
52
2006
52
1960
51
1930
50
Revolution, 1917-1921
49
1992
47
1995
45
1979
44
1984
44
1940-1950
43
more ...