| Value | Category | Cases | |
|---|---|---|---|
| -9 | Don't know | 6 | 
                                    
                                    3.2%
                                 | 
| -8 | Refused | 0 | 
                                    
                                    0%
                                 | 
| 0 | 3 | 
                                    
                                    1.6%
                                 | |
| 1 | 1 | 
                                    
                                    0.5%
                                 | |
| 2 | 1 | 
                                    
                                    0.5%
                                 | |
| 3 | 2 | 
                                    
                                    1.1%
                                 | |
| 4 | 1 | 
                                    
                                    0.5%
                                 | |
| 5 | 6 | 
                                    
                                    3.2%
                                 | |
| 6 | 1 | 
                                    
                                    0.5%
                                 | |
| 7 | 5 | 
                                    
                                    2.7%
                                 | |
| 10 | 15 | 
                                    
                                    8%
                                 | |
| 14 | 12 | 
                                    
                                    6.4%
                                 | |
| 15 | 11 | 
                                    
                                    5.9%
                                 | |
| 20 | 9 | 
                                    
                                    4.8%
                                 | |
| 21 | 3 | 
                                    
                                    1.6%
                                 | |
| 22 | 1 | 
                                    
                                    0.5%
                                 | |
| 25 | 1 | 
                                    
                                    0.5%
                                 | |
| 26 | 1 | 
                                    
                                    0.5%
                                 | |
| 30 | 46 | 
                                    
                                    24.6%
                                 | |
| 34 | 1 | 
                                    
                                    0.5%
                                 | |
| 35 | 4 | 
                                    
                                    2.1%
                                 | |
| 40 | 1 | 
                                    
                                    0.5%
                                 | |
| 45 | 8 | 
                                    
                                    4.3%
                                 | |
| 50 | 1 | 
                                    
                                    0.5%
                                 | |
| 55 | 1 | 
                                    
                                    0.5%
                                 | |
| 60 | 13 | 
                                    
                                    7%
                                 | |
| 66 | 1 | 
                                    
                                    0.5%
                                 | |
| 77 | 1 | 
                                    
                                    0.5%
                                 | |
| 80 | 2 | 
                                    
                                    1.1%
                                 | |
| 90 | 15 | 
                                    
                                    8%
                                 | |
| 95 | 1 | 
                                    
                                    0.5%
                                 | |
| 100 | 2 | 
                                    
                                    1.1%
                                 | |
| 120 | 4 | 
                                    
                                    2.1%
                                 | |
| 170 | 1 | 
                                    
                                    0.5%
                                 | |
| 172 | 1 | 
                                    
                                    0.5%
                                 | |
| 180 | 3 | 
                                    
                                    1.6%
                                 | |
| 185 | 1 | 
                                    
                                    0.5%
                                 | |
| 260 | 1 | 
                                    
                                    0.5%
                                 | |
| Sysmiss | 768 |