| Value | Category | Cases | |
|---|---|---|---|
| 0 | Less than a year | 1 |
0%
|
| 1 | 4 |
0.2%
|
|
| 2 | 1 |
0%
|
|
| 3 | 2 |
0.1%
|
|
| 4 | 16 |
0.7%
|
|
| 5 | 28 |
1.3%
|
|
| 6 | 202 |
9.2%
|
|
| 7 | 371 |
17%
|
|
| 8 | 373 |
17%
|
|
| 9 | 383 |
17.5%
|
|
| 10 | 366 |
16.7%
|
|
| 11 | 400 |
18.3%
|
|
| 12 | 37 |
1.7%
|
|
| 13 | 2 |
0.1%
|
|
| 88 | 1 |
0%
|
|
| 89 | 1 |
0%
|
|
| 98 | I do not know | 0 |
0%
|