Number of Bomb Explosions 1969-81
Jan
Feb
Mar
Apr
May
June
July
Aug
Sep
Oct
Nov
Dec
1969
0
2
3
1
1970
10
8
12
4
16
26
17
23
18
6
1971
11
36
30
39
51
53
79
142
186
155
117
123
1972
156
140
136
105
94
184
126
87
96
82
57
1973
73
104
65
110
67
64
118
58
1974
63
90
111
44
69
55
42
28
32
49
38
1975
24
46
19
25
47
72
37
35
1976
78
83
50
48
56
33
45
1977
34
7
20
68
1978
74
31
81
89
1979
52
75
40
21
41
1980
14
27
13
22
5
1981
130
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