| Value | Category | Cases | |
|---|---|---|---|
| -9 | Don't know (spontaneous) | 6 |
1.3%
|
| 1 | One year or less | 3 |
0.6%
|
| 3 | 1 |
0.2%
|
|
| 4 | 1 |
0.2%
|
|
| 5 | 1 |
0.2%
|
|
| 6 | 1 |
0.2%
|
|
| 7 | 2 |
0.4%
|
|
| 8 | 5 |
1.1%
|
|
| 9 | 2 |
0.4%
|
|
| 10 | 21 |
4.4%
|
|
| 11 | 10 |
2.1%
|
|
| 12 | 6 |
1.3%
|
|
| 13 | 4 |
0.8%
|
|
| 14 | 5 |
1.1%
|
|
| 15 | 28 |
5.9%
|
|
| 16 | 4 |
0.8%
|
|
| 17 | 13 |
2.7%
|
|
| 18 | 5 |
1.1%
|
|
| 19 | 4 |
0.8%
|
|
| 20 | 42 |
8.9%
|
|
| 21 | 8 |
1.7%
|
|
| 22 | 8 |
1.7%
|
|
| 23 | 11 |
2.3%
|
|
| 24 | 4 |
0.8%
|
|
| 25 | 41 |
8.6%
|
|
| 26 | 5 |
1.1%
|
|
| 27 | 11 |
2.3%
|
|
| 28 | 11 |
2.3%
|
|
| 29 | 8 |
1.7%
|
|
| 30 | 81 |
17.1%
|
|
| 31 | 2 |
0.4%
|
|
| 32 | 7 |
1.5%
|
|
| 33 | 14 |
3%
|
|
| 34 | 3 |
0.6%
|
|
| 35 | 42 |
8.9%
|
|
| 37 | 4 |
0.8%
|
|
| 38 | 6 |
1.3%
|
|
| 39 | 3 |
0.6%
|
|
| 40 | 22 |
4.6%
|
|
| 42 | 2 |
0.4%
|
|
| 43 | 2 |
0.4%
|
|
| 45 | 4 |
0.8%
|
|
| 46 | 1 |
0.2%
|
|
| 47 | 2 |
0.4%
|
|
| 49 | 1 |
0.2%
|
|
| 50 | 4 |
0.8%
|
|
| 51 | 1 |
0.2%
|
|
| 53 | 1 |
0.2%
|
|
| 55 | 1 |
0.2%
|