| Value | Category | Cases | |
|---|---|---|---|
| -9999 | inapplicable | 12985 |
99.9%
|
| -3 | non-response | 0 |
0%
|
| -2 | non response | 0 |
0%
|
| -1 | non response | 0 |
0%
|
| 1972 | 1 |
0%
|
|
| 1974 | 3 |
0%
|
|
| 1975 | 1 |
0%
|
|
| 1976 | 1 |
0%
|
|
| 1980 | 1 |
0%
|
|
| 1981 | 1 |
0%
|
|
| 1982 | 1 |
0%
|
|
| 1989 | 1 |
0%
|
|
| 1990 | 1 |
0%
|
|
| 1995 | 3 |
0%
|
|
| 1996 | 1 |
0%
|
|
| 1998 | 1 |
0%
|
|
| 2001 | 1 |
0%
|
|
| 2003 | 1 |
0%
|