| Value | Category | Cases | |
|---|---|---|---|
| 2003 | 2003 | 3052807 |
31.1%
|
| 2004 | 2004 | 592016 |
6%
|
| 2005 | 2005 | 612591 |
6.2%
|
| 2006 | 2006 | 624965 |
6.4%
|
| 2007 | 2007 | 638940 |
6.5%
|
| 2008 | 2008 | 609358 |
6.2%
|
| 2009 | 2009 | 591405 |
6%
|
| 2010 | 2010 | 568383 |
5.8%
|
| 2011 | 2011 | 524343 |
5.3%
|
| 2012 | 2012 | 503922 |
5.1%
|
| 2013 | 2013 | 495895 |
5.1%
|
| 2014 | 2014 | 490399 |
5%
|
| 2015 | 2015 | 503600 |
5.1%
|