How many countries have over 1 billion population?
2
2
2
2
2
2
2
3
2
3
2
3
2
3
2
3
2
1
5
3
2
1
5
3
2
1
5
3
2
4
1
5
3
2
4
1
5
3
2
4
1
5
3
2
4
1
5
3
2
4
1
5
3
2
4
1
5
3
2
4
1
5
3
4
1
5
2 countries
3
4
1
5
3
4
1
5
3
4
1
5
3
4
1
0
5
3
4
1
3 countries
5
4 countries
0
4
1
5
7
6
0
4
1
2 countries
5
7
6
4
1
0
5
8
7
6
4
1
10
5
8
0
7
6
4
10
8
7
6
4
10
8
3 countries
7
6
5 countries
4
10
4 countries
2 countries
8
7
6
10
11
8
7
6
9
10
11
8
7
6
9
10
11
8 countries
8
6 countries
7
2 countries
6
9
10
13
11
8
7
6
9
3 countries
7 countries
10
13
11
8
4 countries
7
10 countries
6
9
10
13
11
8
5 countries
7
6
11 countries
9
14
2 countries
10
13
11
8
7
6
9
14
10
13
11
3 countries
8
7