| Value | Category | Cases | |
|---|---|---|---|
| 0 | 353 | 
                                    
                                    86.5%
                                 | |
| 1 | 17 | 
                                    
                                    4.2%
                                 | |
| 2 | 16 | 
                                    
                                    3.9%
                                 | |
| 3 | 10 | 
                                    
                                    2.5%
                                 | |
| 4 | 4 | 
                                    
                                    1%
                                 | |
| 5 | 2 | 
                                    
                                    0.5%
                                 | |
| 6 | 1 | 
                                    
                                    0.2%
                                 | |
| 10 | 1 | 
                                    
                                    0.2%
                                 | |
| 15 | 1 | 
                                    
                                    0.2%
                                 | |
| 20 | 2 | 
                                    
                                    0.5%
                                 | |
| 150 | 1 | 
                                    
                                    0.2%
                                 | |
| Sysmiss | 1992 |