| Value | Category | Cases | |
|---|---|---|---|
| -9 | Don't know (spontaneous) | 2 |
0.6%
|
| 0 | 32 |
9.5%
|
|
| 1 | One minute or less | 21 |
6.2%
|
| 2 | 1 |
0.3%
|
|
| 3 | 4 |
1.2%
|
|
| 4 | 2 |
0.6%
|
|
| 5 | 38 |
11.3%
|
|
| 6 | 2 |
0.6%
|
|
| 8 | 3 |
0.9%
|
|
| 10 | 76 |
22.6%
|
|
| 12 | 3 |
0.9%
|
|
| 13 | 2 |
0.6%
|
|
| 14 | 1 |
0.3%
|
|
| 15 | 41 |
12.2%
|
|
| 20 | 24 |
7.1%
|
|
| 25 | 2 |
0.6%
|
|
| 30 | 42 |
12.5%
|
|
| 35 | 8 |
2.4%
|
|
| 40 | 9 |
2.7%
|
|
| 45 | 14 |
4.2%
|
|
| 50 | 8 |
2.4%
|
|
| 55 | 1 |
0.3%
|
|
| 59 | 1 |
0.3%
|
|
| Sysmiss | 629 |