How many countries have over 500 million people?
2
5
5
4
5
3
4
2
5
1
3
4
2
5
1
3
4
2
5
1
3
4
2
5
1
3
4
2
5
1
3
4
2
5
1
3
4
2
5
1
3
6
4
2
5
1
3
6
4
2
5
1
3
6
4
2
5
1
3
6
4
2
7
5
1
3
6
4
2
7
5
1
3
6
0
4
2
7
5
1
3
6
4
2
7
5
1
3
6
4
2
7
5
1
3
6
4
2
7
5
1
8
3
6
4
2
7
5
1
9
8
3
6
10
4
2
7
1
9
8
3
11
6
10
4
2
7
1
9
8
3
11
6
10
2
7
1
9
8
11
6
10
7
9
8
11
6
10
12
7
9
8
13
11
6
10
12
7
9
8
13
11
6
10
14
12
7
9
8
13
11
6
10
14
12
7
9
8
13
11
6
10
14
12
7
9
8
13
11
6
10
14
12
7
66
62
63
59
58
128
57