How many presidents served in the navy?
6
1
1
2
1
2
1
2
4
1
2
4
1
2
3
4
1
2
3
4
1
2
5
3
4
1
2
5
3
4
1
2
5
3
4
1
2
5
3
4
1
2
5
3
0
4
1
2
5
3
4
0
1
2
5
3
4
1
0
2
5
3
4
1
2
5
3
6
0
4
1
2
5
3
6
4
0
1
2
5
3
6
4
1
0
2
5
3
6
4
1
2
7
5
3
6
4
2
7
5
3
6
4
8
7
5
3
6
4
8
7
5
3
6
4
8
7
5
3
6
8
7
5
3
6
8
7
5
6
9
8
7
5
6
9
11
8
7
6
9
11
8
7
6
9
11
10
8
7
6
9
11
10
8
7
6
9
11
10
8
7
6
9
13
11
10
12
8
7
6
9
13
11
10
12
8
7
6
9
13
11
10
12
8
7
6
9
13
14
11
10
12
8
7
62
66
62
66
61
62
58