| Value | Category | Cases | |
|---|---|---|---|
| 1 | less than 50 years | 69 |
31.9%
|
| 2 | 51 to 55 years | 72 |
33.3%
|
| 3 | 56 to 60 years | 54 |
25%
|
| 4 | 61 to 65 years | 19 |
8.8%
|
| 5 | over 65 years | 2 |
0.9%
|