| Value | Category | Cases | |
|---|---|---|---|
| -9 | Don't know | 12 | 
                                    
                                    6.3%
                                 | 
| -8 | Refused | 0 | 
                                    
                                    0%
                                 | 
| 0 | 17 | 
                                    
                                    8.9%
                                 | |
| 1 | 5 | 
                                    
                                    2.6%
                                 | |
| 2 | 3 | 
                                    
                                    1.6%
                                 | |
| 3 | 6 | 
                                    
                                    3.1%
                                 | |
| 4 | 2 | 
                                    
                                    1%
                                 | |
| 5 | 6 | 
                                    
                                    3.1%
                                 | |
| 6 | 1 | 
                                    
                                    0.5%
                                 | |
| 7 | 8 | 
                                    
                                    4.2%
                                 | |
| 10 | 6 | 
                                    
                                    3.1%
                                 | |
| 14 | 13 | 
                                    
                                    6.8%
                                 | |
| 15 | 4 | 
                                    
                                    2.1%
                                 | |
| 17 | 1 | 
                                    
                                    0.5%
                                 | |
| 20 | 12 | 
                                    
                                    6.3%
                                 | |
| 21 | 1 | 
                                    
                                    0.5%
                                 | |
| 25 | 4 | 
                                    
                                    2.1%
                                 | |
| 28 | 1 | 
                                    
                                    0.5%
                                 | |
| 30 | 25 | 
                                    
                                    13%
                                 | |
| 33 | 1 | 
                                    
                                    0.5%
                                 | |
| 35 | 3 | 
                                    
                                    1.6%
                                 | |
| 45 | 7 | 
                                    
                                    3.6%
                                 | |
| 50 | 2 | 
                                    
                                    1%
                                 | |
| 52 | 1 | 
                                    
                                    0.5%
                                 | |
| 60 | 14 | 
                                    
                                    7.3%
                                 | |
| 62 | 1 | 
                                    
                                    0.5%
                                 | |
| 75 | 2 | 
                                    
                                    1%
                                 | |
| 78 | 1 | 
                                    
                                    0.5%
                                 | |
| 90 | 15 | 
                                    
                                    7.8%
                                 | |
| 100 | 6 | 
                                    
                                    3.1%
                                 | |
| 105 | 1 | 
                                    
                                    0.5%
                                 | |
| 106 | 1 | 
                                    
                                    0.5%
                                 | |
| 110 | 1 | 
                                    
                                    0.5%
                                 | |
| 120 | 1 | 
                                    
                                    0.5%
                                 | |
| 160 | 1 | 
                                    
                                    0.5%
                                 | |
| 180 | 1 | 
                                    
                                    0.5%
                                 | |
| 300 | 2 | 
                                    
                                    1%
                                 | |
| 365 | 4 | 
                                    
                                    2.1%
                                 | |
| Sysmiss | 763 |