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