| Value | Category | Cases | |
|---|---|---|---|
| 2009 or earlier | 18927 |
8.8%
|
|
| 2010 | 1723 |
0.8%
|
|
| 2011 | 1191 |
0.6%
|
|
| 2012 | 1544 |
0.7%
|
|
| 2013 | 1795 |
0.8%
|
|
| 2014 | 2504 |
1.2%
|
|
| 2015 | 2631 |
1.2%
|
|
| 2016 | 2622 |
1.2%
|
|
| 2017 | 3850 |
1.8%
|
|
| 2018 | 3918 |
1.8%
|
|
| 2019 | 4375 |
2%
|
|
| NA | 171127 |
79.1%
|