| Value | Category | Cases | |
|---|---|---|---|
| 0 | No written agreement | 1841 |
78.9%
|
| 1 | Written formal agreement | 491 |
21.1%
|
| 2147483622 | Don't know | 0 |
0%
|
| 2147483623 | Refused to respond | 0 |
0%
|
| 2147483647 | Not administered | 0 |
0%
|
| 11 | .Z | 3760 |