| Value | Category | Cases | |
|---|---|---|---|
| -7 | 31 |
24.6%
|
|
| 0 | 1 |
0.8%
|
|
| 1 | Decreased since 2002 | 7 |
5.6%
|
| 2 | No change | 19 |
15.1%
|
| 3 | Increased since 2002 | 68 |
54%
|
| -9 | 7 |