| Value | Category | Cases | |
|---|---|---|---|
| -9 | Don't know (spontaneous) | 17 | 
                                    
                                    3.7%
                                 | 
| -8 | Refusal (spontaneous) | 5 | 
                                    
                                    1.1%
                                 | 
| 1 | 16 | 
                                    
                                    3.5%
                                 | |
| 2 | 6 | 
                                    
                                    1.3%
                                 | |
| 3 | 7 | 
                                    
                                    1.5%
                                 | |
| 4 | 1 | 
                                    
                                    0.2%
                                 | |
| 5 | 10 | 
                                    
                                    2.2%
                                 | |
| 6 | 12 | 
                                    
                                    2.6%
                                 | |
| 7 | 2 | 
                                    
                                    0.4%
                                 | |
| 8 | 2 | 
                                    
                                    0.4%
                                 | |
| 9 | 2 | 
                                    
                                    0.4%
                                 | |
| 10 | 8 | 
                                    
                                    1.8%
                                 | |
| 12 | 126 | 
                                    
                                    27.6%
                                 | |
| 13 | 1 | 
                                    
                                    0.2%
                                 | |
| 18 | 2 | 
                                    
                                    0.4%
                                 | |
| 24 | 19 | 
                                    
                                    4.2%
                                 | |
| 36 | 46 | 
                                    
                                    10.1%
                                 | |
| 48 | 9 | 
                                    
                                    2%
                                 | |
| 56 | 1 | 
                                    
                                    0.2%
                                 | |
| 58 | 1 | 
                                    
                                    0.2%
                                 | |
| 59 | 1 | 
                                    
                                    0.2%
                                 | |
| 60 | 66 | 
                                    
                                    14.5%
                                 | |
| 72 | 8 | 
                                    
                                    1.8%
                                 | |
| 80 | 2 | 
                                    
                                    0.4%
                                 | |
| 84 | 26 | 
                                    
                                    5.7%
                                 | |
| 86 | 1 | 
                                    
                                    0.2%
                                 | |
| 96 | 8 | 
                                    
                                    1.8%
                                 | |
| 100 | 1 | 
                                    
                                    0.2%
                                 | |
| 102 | 1 | 
                                    
                                    0.2%
                                 | |
| 108 | 1 | 
                                    
                                    0.2%
                                 | |
| 112 | 1 | 
                                    
                                    0.2%
                                 | |
| 120 | 38 | 
                                    
                                    8.3%
                                 | |
| 144 | 4 | 
                                    
                                    0.9%
                                 | |
| 180 | 1 | 
                                    
                                    0.2%
                                 | |
| 240 | 1 | 
                                    
                                    0.2%
                                 | |
| 360 | 2 | 
                                    
                                    0.4%
                                 | |
| 1825 | 1 | 
                                    
                                    0.2%
                                 | |
| Sysmiss | 499 |