0
middle-aged
1
2
2
2
1
1
1
1
0
1
1
2
1
2
2
3
1
1
1
0
2
2
1
1
1
1
0
0
3
1
2
3
2
1
4
2
5
5
2
1
1
2
1
5
1
2
1
2
7
