| Value | Category | Cases | |
|---|---|---|---|
| -9 | Don't know (spontaneous) | 5 | 
                                    
                                    1.2%
                                 | 
| 0 | 51 | 
                                    
                                    12.2%
                                 | |
| 1 | 55 | 
                                    
                                    13.2%
                                 | |
| 2 | 44 | 
                                    
                                    10.6%
                                 | |
| 3 | 33 | 
                                    
                                    7.9%
                                 | |
| 4 | 27 | 
                                    
                                    6.5%
                                 | |
| 5 | 25 | 
                                    
                                    6%
                                 | |
| 6 | 13 | 
                                    
                                    3.1%
                                 | |
| 7 | 10 | 
                                    
                                    2.4%
                                 | |
| 8 | 11 | 
                                    
                                    2.6%
                                 | |
| 9 | 4 | 
                                    
                                    1%
                                 | |
| 10 | 24 | 
                                    
                                    5.8%
                                 | |
| 11 | 3 | 
                                    
                                    0.7%
                                 | |
| 12 | 4 | 
                                    
                                    1%
                                 | |
| 13 | 4 | 
                                    
                                    1%
                                 | |
| 14 | 3 | 
                                    
                                    0.7%
                                 | |
| 15 | 7 | 
                                    
                                    1.7%
                                 | |
| 16 | 2 | 
                                    
                                    0.5%
                                 | |
| 17 | 2 | 
                                    
                                    0.5%
                                 | |
| 18 | 2 | 
                                    
                                    0.5%
                                 | |
| 19 | 1 | 
                                    
                                    0.2%
                                 | |
| 20 | 12 | 
                                    
                                    2.9%
                                 | |
| 24 | 1 | 
                                    
                                    0.2%
                                 | |
| 25 | 8 | 
                                    
                                    1.9%
                                 | |
| 26 | 1 | 
                                    
                                    0.2%
                                 | |
| 28 | 1 | 
                                    
                                    0.2%
                                 | |
| 30 | 14 | 
                                    
                                    3.4%
                                 | |
| 33 | 1 | 
                                    
                                    0.2%
                                 | |
| 35 | 4 | 
                                    
                                    1%
                                 | |
| 38 | 1 | 
                                    
                                    0.2%
                                 | |
| 40 | 3 | 
                                    
                                    0.7%
                                 | |
| 44 | 1 | 
                                    
                                    0.2%
                                 | |
| 45 | 1 | 
                                    
                                    0.2%
                                 | |
| 47 | 1 | 
                                    
                                    0.2%
                                 | |
| 50 | 10 | 
                                    
                                    2.4%
                                 | |
| 51 | 1 | 
                                    
                                    0.2%
                                 | |
| 52 | 1 | 
                                    
                                    0.2%
                                 | |
| 53 | 1 | 
                                    
                                    0.2%
                                 | |
| 54 | 1 | 
                                    
                                    0.2%
                                 | |
| 60 | 3 | 
                                    
                                    0.7%
                                 | |
| 70 | 3 | 
                                    
                                    0.7%
                                 | |
| 72 | 1 | 
                                    
                                    0.2%
                                 | |
| 74 | 1 | 
                                    
                                    0.2%
                                 | |
| 80 | 3 | 
                                    
                                    0.7%
                                 | |
| 85 | 1 | 
                                    
                                    0.2%
                                 | |
| 100 | 4 | 
                                    
                                    1%
                                 | |
| 150 | 3 | 
                                    
                                    0.7%
                                 | |
| 180 | 2 | 
                                    
                                    0.5%
                                 | |
| 200 | 3 | 
                                    
                                    0.7%
                                 | |
| Sysmiss | 607 |