| Value | Category | Cases | |
|---|---|---|---|
| -9 | Don't know (spontaneous) | 4 |
0.7%
|
| 1 | One year or less | 2 |
0.3%
|
| 2 | 2 |
0.3%
|
|
| 3 | 6 |
1%
|
|
| 4 | 12 |
2%
|
|
| 5 | 12 |
2%
|
|
| 6 | 17 |
2.8%
|
|
| 7 | 14 |
2.3%
|
|
| 8 | 13 |
2.2%
|
|
| 9 | 8 |
1.3%
|
|
| 10 | 44 |
7.3%
|
|
| 11 | 11 |
1.8%
|
|
| 12 | 11 |
1.8%
|
|
| 13 | 9 |
1.5%
|
|
| 14 | 14 |
2.3%
|
|
| 15 | 47 |
7.8%
|
|
| 16 | 6 |
1%
|
|
| 17 | 9 |
1.5%
|
|
| 18 | 13 |
2.2%
|
|
| 19 | 6 |
1%
|
|
| 20 | 60 |
10%
|
|
| 21 | 10 |
1.7%
|
|
| 22 | 10 |
1.7%
|
|
| 23 | 7 |
1.2%
|
|
| 24 | 17 |
2.8%
|
|
| 25 | 46 |
7.6%
|
|
| 26 | 7 |
1.2%
|
|
| 27 | 9 |
1.5%
|
|
| 28 | 6 |
1%
|
|
| 29 | 7 |
1.2%
|
|
| 30 | 69 |
11.4%
|
|
| 31 | 7 |
1.2%
|
|
| 32 | 6 |
1%
|
|
| 33 | 4 |
0.7%
|
|
| 34 | 4 |
0.7%
|
|
| 35 | 18 |
3%
|
|
| 36 | 2 |
0.3%
|
|
| 37 | 1 |
0.2%
|
|
| 38 | 4 |
0.7%
|
|
| 39 | 1 |
0.2%
|
|
| 40 | 29 |
4.8%
|
|
| 42 | 1 |
0.2%
|
|
| 45 | 6 |
1%
|
|
| 47 | 2 |
0.3%
|
|
| 50 | 10 |
1.7%
|