| Value | Category | Cases | |
|---|---|---|---|
| 99 | Mising | 0 |
0%
|
| 1980 | 1 |
0.7%
|
|
| 1982 | 1 |
0.7%
|
|
| 1984 | 1 |
0.7%
|
|
| 1985 | 1 |
0.7%
|
|
| 1988 | 76 |
56.7%
|
|
| 1989 | 15 |
11.2%
|
|
| 1990 | 4 |
3%
|
|
| 1991 | 1 |
0.7%
|
|
| 1992 | 1 |
0.7%
|
|
| 1993 | 5 |
3.7%
|
|
| 1994 | 13 |
9.7%
|
|
| 1995 | 6 |
4.5%
|
|
| 1999 | 1 |
0.7%
|
|
| 2000 | 1 |
0.7%
|
|
| 2002 | 1 |
0.7%
|
|
| 2007 | 2 |
1.5%
|
|
| 2008 | 1 |
0.7%
|
|
| 2010 | 1 |
0.7%
|
|
| 2011 | 1 |
0.7%
|
|
| 2013 | 1 |
0.7%
|
|
| Sysmiss | 1591 |