| Value | Category | Cases | |
|---|---|---|---|
| 1951 | 1 |
2.2%
|
|
| 1969 | 1 |
2.2%
|
|
| 1974 | 1 |
2.2%
|
|
| 1977 | 1 |
2.2%
|
|
| 1980 | 2 |
4.3%
|
|
| 1981 | 1 |
2.2%
|
|
| 1984 | 2 |
4.3%
|
|
| 1985 | 2 |
4.3%
|
|
| 1986 | 1 |
2.2%
|
|
| 1987 | 1 |
2.2%
|
|
| 1988 | 3 |
6.5%
|
|
| 1989 | 1 |
2.2%
|
|
| 1992 | 1 |
2.2%
|
|
| 1993 | 1 |
2.2%
|
|
| 1995 | 1 |
2.2%
|
|
| 1996 | 1 |
2.2%
|
|
| 1997 | 1 |
2.2%
|
|
| 2005 | 1 |
2.2%
|
|
| 2006 | 1 |
2.2%
|
|
| 3333 | Missing | 2 |
4.3%
|
| 5555 | Not Applicable | 0 |
0%
|
| 8888 | Refused | 0 |
0%
|
| 9999 | Don't Know | 20 |
43.5%
|
| Sysmiss | 26773 |