| Value | Category | Cases | |
|---|---|---|---|
| -9 | Don't know (spontaneous) | 1 | 
                                    
                                    4.8%
                                 | 
| 57 | 1 | 
                                    
                                    4.8%
                                 | |
| 60 | 1 | 
                                    
                                    4.8%
                                 | |
| 135 | 1 | 
                                    
                                    4.8%
                                 | |
| 200 | 2 | 
                                    
                                    9.5%
                                 | |
| 215 | 1 | 
                                    
                                    4.8%
                                 | |
| 230 | 1 | 
                                    
                                    4.8%
                                 | |
| 240 | 1 | 
                                    
                                    4.8%
                                 | |
| 250 | 1 | 
                                    
                                    4.8%
                                 | |
| 280 | 1 | 
                                    
                                    4.8%
                                 | |
| 300 | 1 | 
                                    
                                    4.8%
                                 | |
| 310 | 1 | 
                                    
                                    4.8%
                                 | |
| 350 | 2 | 
                                    
                                    9.5%
                                 | |
| 450 | 1 | 
                                    
                                    4.8%
                                 | |
| 500 | 1 | 
                                    
                                    4.8%
                                 | |
| 600 | 1 | 
                                    
                                    4.8%
                                 | |
| 750 | 1 | 
                                    
                                    4.8%
                                 | |
| 1500 | 2 | 
                                    
                                    9.5%
                                 | |
| Sysmiss | 129 |