15 years
12 years
19 years
17 years
A. 15 years
18
15
25
20
5
10
15
20
10
8
4
None
11:54
11:51
11:50
11:53
10 years
14 years
16 years
12 years
39
37
41
35
45
42
40
44
35 years
47 years
40 years
45 years
15
14
20
22
36
40
41
48
24
18
16
12
30
25
20
15
8:7
6:3
3:6
9:5
13
10
18
15
40
35
25
30
22 years
20 years
21 years
24 years
38
40
41
30
15 years
12 years
19 years
17 years
12
13
14
15