| Value | Category | Cases | |
|---|---|---|---|
| 1 | It was main use – more than 80% | 3 | 
                                                                 
                                    
                                    15%
                                 
                                                             | 
                                                        
                    
| 2 | It was important use – 60-80% | 0 | 
                                                                 
                                    
                                    0%
                                 
                                                             | 
                                                        
                    
| 3 | It was medium use – 40-60% | 1 | 
                                                                 
                                    
                                    5%
                                 
                                                             | 
                                                        
                    
| 4 | It was less important use – 20-40% | 0 | 
                                                                 
                                    
                                    0%
                                 
                                                             | 
                                                        
                    
| 5 | It was not significant use – Less than 20% | 1 | 
                                                                 
                                    
                                    5%
                                 
                                                             | 
                                                        
                    
| 6 | It was not used – 0% | 15 | 
                                                                 
                                    
                                    75%
                                 
                                                             | 
                                                        
                    
| 11 | .D | 493 |