Total Number of Shooting Attacks 1969-81
Jan
Feb
Mar
Apr
May
June
July
Aug
Sep
Oct
Nov
Dec
1969
-
1970
1
4
11
18
8
37
17
12
24
35
28
1971
75
53
33
39
185
182
278
420
243
314
1972
336
391
399
724
1223
1215
2778
640
747
812
634
729
1973
678
695
799
477
369
303
283
237
266
298
312
299
1974
297
229
292
329
353
227
240
317
222
280
154
1975
110
112
141
199
121
139
126
244
175
183
180
73
1976
124
208
157
137
171
138
167
149
127
1977
89
109
140
81
105
61
57
25
51
1978
64
67
104
70
62
54
46
45
52
1979
59
60
58
87
71
63
42
1980
38
68
49
32
1981
44
285
95
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