| Value | Category | Cases | |
|---|---|---|---|
| 1 | 1. Wave 1-2010/11 | 71026 | 
                                                                 
                                    
                                    4.3%
                                 
                                                             | 
                                                        
                    
| 2 | 2. Wave 2-2012/13 | 494866 | 
                                                                 
                                    
                                    30.1%
                                 
                                                             | 
                                                        
                    
| 3 | 3. Wave 3-2015/16 | 531280 | 
                                                                 
                                    
                                    32.3%
                                 
                                                             | 
                                                        
                    
| 4 | 4. wave 4-2018/19 | 547360 | 
                                                                 
                                    
                                    33.3%
                                 
                                                             |