How many black US senators have there been?
11
2
2
2
2
2
1
2
1
2
1
2
1
2
1
3
2
1
3
2
1
3
2
1
4
3
2
1
5
4
3
2
1
5
4
3
2
1
5
4
3
2
1
5
4
3
2
1
5
4
3
2
1
5
4
3
2
1
5
4
3
2
1
5
4
3
1
5
4
3
1
5
4
3
1
5
7
4
3
1
0
5
7
4
3
6
5
7
4
3
6
5
7
4
3
6
5
7
4
3
6
5
7
4
3
6
5
7
4
9
6
8
13
5
7
4
9
6
8
13
5
7
4
9
6
8
13
5
7
9
6
8
13
7
9
6
8
13
7
9
6
8
13
7
9
6
8
13
7
9
12
6
8
13
7
9
12
6
8
13
7
10
9
12
6
11
8
13
7
10
9
12
6
11
8
13
7
10
9
12
6
11
8
13
7
10
9
12
6
11
8
13
14
7
10
9
12
6
11
8
269