How many Call of Duty games have there been?
24
3
2
3
2
3
2
4
5
3
2
4
5
3
2
4
5
3
2
4
5
3
2
4
5
3
2
4
5
3
1
2
4
5
3
0
1
2
4
5
3
1
0
2
4
5
3
1
0
2
4
5
3
1
7
6
2
4
5
3
0
1
7
6
2
4
5
3
1
0
7
6
2
4
5
3
1
7
6
0
2
4
5
3
1
7
6
2
4
5
3
8
1
7
6
2
4
5
3
8
1
7
6
2
9
4
5
3
8
1
10
7
6
2
9
4
5
8
1
10
7
6
9
4
5
8
1
11
10
7
6
9
4
5
8
1
11
10
13
7
6
9
8
1
16
11
10
13
7
6
9
8
1
16
11
10
13
12
7
6
9
8
1
16
11
10
13
12
7
6
9
14
8
1
16
11
10
13
12
7
6
9
14
8
1
16
11
10
13
12
7
6
9
14
11
62
58
59
66
57
62