| Value | Category | Cases | |
|---|---|---|---|
| 0 | less than 1 year | 43 | 
                                                                 
                                    
                                    0.4%
                                 
                                                             | 
                                                        
                    
| 1 | 317 | 
                                                                 
                                    
                                    2.9%
                                 
                                                             | 
                                                        
                    |
| 2 | 982 | 
                                                                 
                                    
                                    9%
                                 
                                                             | 
                                                        
                    |
| 3 | 1220 | 
                                                                 
                                    
                                    11.2%
                                 
                                                             | 
                                                        
                    |
| 4 | 1409 | 
                                                                 
                                    
                                    12.9%
                                 
                                                             | 
                                                        
                    |
| 5 | 1211 | 
                                                                 
                                    
                                    11.1%
                                 
                                                             | 
                                                        
                    |
| 6 | 981 | 
                                                                 
                                    
                                    9%
                                 
                                                             | 
                                                        
                    |
| 7 | 1255 | 
                                                                 
                                    
                                    11.5%
                                 
                                                             | 
                                                        
                    |
| 8 | 914 | 
                                                                 
                                    
                                    8.4%
                                 
                                                             | 
                                                        
                    |
| 9 | 1095 | 
                                                                 
                                    
                                    10%
                                 
                                                             | 
                                                        
                    |
| 10 | 315 | 
                                                                 
                                    
                                    2.9%
                                 
                                                             | 
                                                        
                    |
| 11 | 290 | 
                                                                 
                                    
                                    2.7%
                                 
                                                             | 
                                                        
                    |
| 12 | 866 | 
                                                                 
                                    
                                    7.9%
                                 
                                                             | 
                                                        
                    |
| 98 | don't know | 13 | 
                                                                 
                                    
                                    0.1%
                                 
                                                             | 
                                                        
                    
| 99 | 5 | 
                                                                 
                                    
                                    0%
                                 
                                                             | 
                                                        
                    |
| 101 | .Z | 7838 |