| Value | Category | Cases | |
|---|---|---|---|
| Every 2 years | 2 |
3.7%
|
|
| Every 3 years | 20 |
37%
|
|
| Every 5 years or more | 2 |
3.7%
|
|
| Every 6 months | 12 |
22.2%
|
|
| NA (no rule) | 2 |
3.7%
|
|
| Yearly | 16 |
29.6%
|