| Value | Category | Cases | |
|---|---|---|---|
| 0 | 1 |
1.2%
|
|
| 1 | Decreased since 2002 | 4 |
4.9%
|
| 2 | No change | 52 |
63.4%
|
| 3 | Increased since 2002 | 25 |
30.5%
|
| -9 | 21 | ||
| -7 | 30 |