| Value | Category | Cases | |
|---|---|---|---|
| -9 | Don't know (spontaneous) | 0 | 
                                    
                                    0%
                                 | 
| 0 | 25 | 
                                    
                                    8%
                                 | |
| 1 | 31 | 
                                    
                                    9.9%
                                 | |
| 2 | 36 | 
                                    
                                    11.5%
                                 | |
| 3 | 34 | 
                                    
                                    10.9%
                                 | |
| 4 | 24 | 
                                    
                                    7.7%
                                 | |
| 5 | 25 | 
                                    
                                    8%
                                 | |
| 6 | 13 | 
                                    
                                    4.2%
                                 | |
| 7 | 14 | 
                                    
                                    4.5%
                                 | |
| 8 | 12 | 
                                    
                                    3.8%
                                 | |
| 9 | 6 | 
                                    
                                    1.9%
                                 | |
| 10 | 12 | 
                                    
                                    3.8%
                                 | |
| 12 | 4 | 
                                    
                                    1.3%
                                 | |
| 13 | 2 | 
                                    
                                    0.6%
                                 | |
| 15 | 8 | 
                                    
                                    2.6%
                                 | |
| 16 | 3 | 
                                    
                                    1%
                                 | |
| 17 | 1 | 
                                    
                                    0.3%
                                 | |
| 18 | 3 | 
                                    
                                    1%
                                 | |
| 19 | 2 | 
                                    
                                    0.6%
                                 | |
| 20 | 10 | 
                                    
                                    3.2%
                                 | |
| 23 | 2 | 
                                    
                                    0.6%
                                 | |
| 24 | 1 | 
                                    
                                    0.3%
                                 | |
| 25 | 6 | 
                                    
                                    1.9%
                                 | |
| 26 | 2 | 
                                    
                                    0.6%
                                 | |
| 27 | 3 | 
                                    
                                    1%
                                 | |
| 28 | 1 | 
                                    
                                    0.3%
                                 | |
| 30 | 2 | 
                                    
                                    0.6%
                                 | |
| 33 | 1 | 
                                    
                                    0.3%
                                 | |
| 35 | 2 | 
                                    
                                    0.6%
                                 | |
| 40 | 3 | 
                                    
                                    1%
                                 | |
| 41 | 2 | 
                                    
                                    0.6%
                                 | |
| 43 | 1 | 
                                    
                                    0.3%
                                 | |
| 48 | 1 | 
                                    
                                    0.3%
                                 | |
| 49 | 1 | 
                                    
                                    0.3%
                                 | |
| 50 | 1 | 
                                    
                                    0.3%
                                 | |
| 65 | 1 | 
                                    
                                    0.3%
                                 | |
| 75 | 1 | 
                                    
                                    0.3%
                                 | |
| 76 | 1 | 
                                    
                                    0.3%
                                 | |
| 92 | 1 | 
                                    
                                    0.3%
                                 | |
| 100 | 1 | 
                                    
                                    0.3%
                                 | |
| 112 | 1 | 
                                    
                                    0.3%
                                 | |
| 125 | 1 | 
                                    
                                    0.3%
                                 | |
| 145 | 1 | 
                                    
                                    0.3%
                                 | |
| 150 | 1 | 
                                    
                                    0.3%
                                 | |
| 175 | 1 | 
                                    
                                    0.3%
                                 | |
| 176 | 1 | 
                                    
                                    0.3%
                                 | |
| 210 | 1 | 
                                    
                                    0.3%
                                 | |
| 240 | 1 | 
                                    
                                    0.3%
                                 | |
| 250 | 1 | 
                                    
                                    0.3%
                                 | |
| 300 | 1 | 
                                    
                                    0.3%
                                 | |
| 320 | 1 | 
                                    
                                    0.3%
                                 | |
| 350 | 1 | 
                                    
                                    0.3%
                                 | |
| 385 | 1 | 
                                    
                                    0.3%
                                 | |
| Sysmiss | 333 |