| Value | Category | Cases | |
|---|---|---|---|
| 1956 | 1 |
4.2%
|
|
| 1959 | 1 |
4.2%
|
|
| 1962 | 1 |
4.2%
|
|
| 1968 | 2 |
8.3%
|
|
| 1970 | 1 |
4.2%
|
|
| 1971 | 1 |
4.2%
|
|
| 1974 | 1 |
4.2%
|
|
| 1977 | 1 |
4.2%
|
|
| 1980 | 1 |
4.2%
|
|
| 1981 | 1 |
4.2%
|
|
| 1982 | 1 |
4.2%
|
|
| 1988 | 2 |
8.3%
|
|
| 1990 | 1 |
4.2%
|
|
| 1991 | 1 |
4.2%
|
|
| 1995 | 1 |
4.2%
|
|
| 2006 | 1 |
4.2%
|
|
| 3333 | Missing | 0 |
0%
|
| 5555 | Not Applicable | 1 |
4.2%
|
| 8888 | Refused | 0 |
0%
|
| 9999 | Don't know | 5 |
20.8%
|
| Sysmiss | 22442 |