How many expansions have been released for World of Warcraft?
8
3
2
3
2
5
3
2
5
3
4
2
5
3
4
2
5
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
4
1
2
5
3
4
1
2
5
3
6
4
1
2
5
3
6
4
1
7
2
5
3
6
4
1
7
2
5
3
6
4
1
7
2
5
3
6
4
1
7
2
5
3
6
4
1
7
2
8
5
3
6
4
1
7
2
8
5
3
6
4
1
7
2
8
5
6
4
1
7
8
11
5
10
6
4
1
7
8
11
10
6
4
1
7
8
11
10
9
6
1
13
7
8
11
10
9
6
1
13
7
8
11
10
9
6
13
7
12
8
11
10
9
6
13
7
12
8
11
10
9
6
13
7
12
8
14
11
16
10
9
6
13
7
12
8
14
11
16
10
9
6
13
7
12
8
14
11
16
10
112
112
128
112
128
128
128