| Value | Category | Cases | |
|---|---|---|---|
| 1 | Less than 1 year | 945 |
7.2%
|
| 2 | About 1 year | 1030 |
7.8%
|
| 3 | About 2 years | 1426 |
10.8%
|
| 4 | About 3 years | 3133 |
23.8%
|
| 5 | About 4-5 years | 3499 |
26.6%
|
| 6 | About 6-7 years | 1547 |
11.8%
|
| 7 | About 8-9 years | 996 |
7.6%
|
| 8 | 10 years or more | 569 |
4.3%
|
| 2147483622 | Not applicable | 0 |
0%
|
| 2147483623 | Refusal | 0 |
0%
|
| 2147483624 | Don't know | 0 |
0%
|
| 2147483625 | No answer | 0 |
0%
|
| 11 | .D | 35921 |