| Value | Category | Cases | |
|---|---|---|---|
| -9 | Don't know (spontaneous) | 76 |
5.7%
|
| 1 | One year or less | 27 |
2%
|
| 2 | 13 |
1%
|
|
| 3 | 28 |
2.1%
|
|
| 4 | 23 |
1.7%
|
|
| 5 | 59 |
4.5%
|
|
| 6 | 32 |
2.4%
|
|
| 7 | 33 |
2.5%
|
|
| 8 | 45 |
3.4%
|
|
| 9 | 27 |
2%
|
|
| 10 | 134 |
10.1%
|
|
| 11 | 30 |
2.3%
|
|
| 12 | 49 |
3.7%
|
|
| 13 | 44 |
3.3%
|
|
| 14 | 43 |
3.3%
|
|
| 15 | 122 |
9.2%
|
|
| 16 | 50 |
3.8%
|
|
| 17 | 67 |
5.1%
|
|
| 18 | 32 |
2.4%
|
|
| 19 | 20 |
1.5%
|
|
| 20 | 112 |
8.5%
|
|
| 21 | 22 |
1.7%
|
|
| 22 | 27 |
2%
|
|
| 23 | 19 |
1.4%
|
|
| 24 | 13 |
1%
|
|
| 25 | 88 |
6.7%
|
|
| 26 | 21 |
1.6%
|
|
| 27 | 10 |
0.8%
|
|
| 28 | 7 |
0.5%
|
|
| 29 | 2 |
0.2%
|
|
| 30 | 24 |
1.8%
|
|
| 32 | 2 |
0.2%
|
|
| 34 | 1 |
0.1%
|
|
| 35 | 6 |
0.5%
|
|
| 37 | 1 |
0.1%
|
|
| 38 | 1 |
0.1%
|
|
| 39 | 1 |
0.1%
|
|
| 40 | 3 |
0.2%
|
|
| 42 | 3 |
0.2%
|
|
| 44 | 1 |
0.1%
|
|
| 45 | 2 |
0.2%
|
|
| 48 | 1 |
0.1%
|
|
| 49 | 1 |
0.1%
|
|
| 50 | 1 |
0.1%
|