| Value | Category | Cases | |
|---|---|---|---|
| 0 | 0.less than a year | 31 |
14.6%
|
| 1 | 42 |
19.7%
|
|
| 2 | 33 |
15.5%
|
|
| 3 | 22 |
10.3%
|
|
| 4 | 15 |
7%
|
|
| 5 | 18 |
8.5%
|
|
| 6 | 9 |
4.2%
|
|
| 7 | 4 |
1.9%
|
|
| 8 | 4 |
1.9%
|
|
| 9 | 3 |
1.4%
|
|
| 10 | 14 |
6.6%
|
|
| 11 | 3 |
1.4%
|
|
| 12 | 3 |
1.4%
|
|
| 13 | 1 |
0.5%
|
|
| 14 | 1 |
0.5%
|
|
| 15 | 4 |
1.9%
|
|
| 17 | 1 |
0.5%
|
|
| 18 | 2 |
0.9%
|
|
| 20 | 1 |
0.5%
|
|
| 30 | 2 |
0.9%
|