How many countries in the world have a population over 1 billion?
2
1
1
1
5
3
1
5
4
3
1
5
2
4
3
1
5
2
4
3
1
5
2
4
3
1
5
2
4
3
6
1
5
2
4
3
6
1
5
2
4
3
6
1
5
2
4
3
7
6
1
5
2
4
3
7
6
1
5
2
4
3
7
6
1
5
2
4
3
7
6
1
5
2
4
3
7
6
1
5
2
4
9
3
7
6
1
5
2
8
0
4
9
3
7
6
1
5
2
8
4
9
0
3
7
6
1
5
2
8
4
9
3
7
6
1
10
5
2
8
11
4
9
3
7
6
10
5
2
8
11
4
9
3
7
6
10
5
2
8
11
4
9
3
7
6
10
2
12
8
11
4
9
7
6
10
2
12
8
11
9
7
6
10
12
8
11
9
7
6
13
10
12
8
11
9
7
6
13
10
12
8
11
9
7
6
128
13
14
10
12
8
11
9
7
14
128
128
128
128
128