| Value | Category | Cases | |
|---|---|---|---|
| 1 | Before 1970 | 1861 |
0.8%
|
| 2 | 1970 -1999 | 4267 |
1.8%
|
| 3 | 2000 - 2011 | 17667 |
7.6%
|
| 4 | 2012 - 2014 | 14177 |
6.1%
|
| 5 | 2015 - 2017 | 47441 |
20.4%
|
| 6 | 2018 - 2020 | 146373 |
63%
|
| 7 | Not stated | 497 |
0.2%
|