| Value | Category | Cases | |
|---|---|---|---|
| 1965 | 1 |
2.4%
|
|
| 1974 | 3 |
7.3%
|
|
| 1975 | 1 |
2.4%
|
|
| 1979 | 1 |
2.4%
|
|
| 1983 | 2 |
4.9%
|
|
| 1984 | 1 |
2.4%
|
|
| 1986 | 1 |
2.4%
|
|
| 1987 | 1 |
2.4%
|
|
| 1988 | 2 |
4.9%
|
|
| 1989 | 1 |
2.4%
|
|
| 1991 | 3 |
7.3%
|
|
| 1993 | 3 |
7.3%
|
|
| 1994 | 2 |
4.9%
|
|
| 1997 | 1 |
2.4%
|
|
| 1998 | 3 |
7.3%
|
|
| 1999 | 1 |
2.4%
|
|
| 2000 | 1 |
2.4%
|
|
| 2001 | 1 |
2.4%
|
|
| 2003 | 2 |
4.9%
|
|
| 2006 | 1 |
2.4%
|
|
| 2007 | 1 |
2.4%
|
|
| 2008 | 1 |
2.4%
|
|
| 2013 | 1 |
2.4%
|
|
| 3333 | Missing | 0 |
0%
|
| 5555 | Not Applicable | 0 |
0%
|
| 8888 | Refused | 0 |
0%
|
| 9999 | Don't know | 6 |
14.6%
|
| Sysmiss | 958 |