| Value | Category | Cases | |
|---|---|---|---|
| 1 | Before 1970 | 268 |
5.9%
|
| 2 | 1970-1979 | 277 |
6.1%
|
| 3 | 1980 - 1989 | 639 |
14%
|
| 4 | 1990 - 1999 | 971 |
21.2%
|
| 5 | 2000 - 2004 | 524 |
11.5%
|
| 6 | 2005 - 2009 | 368 |
8.1%
|
| 7 | 2010 | 92 |
2%
|
| 8 | 2011 | 29 |
0.6%
|
| 9 | 2012 | 41 |
0.9%
|
| 10 | 2013 | 27 |
0.6%
|
| 11 | 2014 | 17 |
0.4%
|
| 12 | 2015 | 9 |
0.2%
|
| 13 | Dont know | 1308 |
28.6%
|
| Sysmiss | 4 |