| Value | Category | Cases | |
|---|---|---|---|
| -998 | Don't Know | 21 |
17.6%
|
| -97 | Not Applicable | 56 |
47.1%
|
| 10 | 4 |
3.4%
|
|
| 15 | 5 |
4.2%
|
|
| 20 | 13 |
10.9%
|
|
| 30 | 9 |
7.6%
|
|
| 40 | 4 |
3.4%
|
|
| 50 | 6 |
5%
|
|
| 60 | 1 |
0.8%
|