| Value | Category | Cases | |
|---|---|---|---|
| 1 | YES, AT LEAST ONCE | 50 | 
                                    
                                    3.2%
                                 | 
| 2 | NO, ALWAYS SUFFICIENT | 1500 | 
                                    
                                    96.7%
                                 | 
| 3 | DON'T KNOW | 1 | 
                                    
                                    0.1%
                                 |