| Value |
Category |
| 1 |
1998 |
| 2 |
1999 |
| 3 |
2000 |
| 4 |
2001 |
| 5 |
2002 |
| 6 |
2003 |
| 7 |
2004 |
| 8 |
OTHER |
| 99 |
OMITTED OR INVALID |
| 11 |
.A |
Warning: these figures indicate the number of cases found in the data file. They cannot be interpreted as summary statistics of the population of interest.