| Value | Category | Cases | |
|---|---|---|---|
| 1 | Below 1990 | 41 |
1.4%
|
| 2 | 1990-1994 | 37 |
1.3%
|
| 3 | 1995-1999 | 246 |
8.6%
|
| 4 | 2000-2004 | 346 |
12.1%
|
| 5 | 2004-2009 | 1088 |
38%
|
| 6 | 2010 and above | 1097 |
38.3%
|
| 99 | Not stated | 8 |
0.3%
|