Value | Category | Cases | |
---|---|---|---|
1 | Before 1970 | 39 |
25%
|
2 | Between 1970 and 1989 | 18 |
11.5%
|
3 | Recent: 1990-2016 | 43 |
27.6%
|
9999 | Not stated | 56 |
35.9%
|