| Value | Category | Cases | |
|---|---|---|---|
| -99 | Don't know | 4 | 
                                    
                                    1.2%
                                 | 
| 2 | 2 | 
                                    
                                    0.6%
                                 | |
| 3 | 2 | 
                                    
                                    0.6%
                                 | |
| 4 | 1 | 
                                    
                                    0.3%
                                 | |
| 5 | 13 | 
                                    
                                    4%
                                 | |
| 6 | 1 | 
                                    
                                    0.3%
                                 | |
| 7 | 1 | 
                                    
                                    0.3%
                                 | |
| 8 | 2 | 
                                    
                                    0.6%
                                 | |
| 10 | 143 | 
                                    
                                    44.3%
                                 | |
| 12 | 2 | 
                                    
                                    0.6%
                                 | |
| 13 | 2 | 
                                    
                                    0.6%
                                 | |
| 18 | 1 | 
                                    
                                    0.3%
                                 | |
| 20 | 31 | 
                                    
                                    9.6%
                                 | |
| 25 | 4 | 
                                    
                                    1.2%
                                 | |
| 30 | 20 | 
                                    
                                    6.2%
                                 | |
| 32 | 1 | 
                                    
                                    0.3%
                                 | |
| 33 | 1 | 
                                    
                                    0.3%
                                 | |
| 35 | 1 | 
                                    
                                    0.3%
                                 | |
| 40 | 8 | 
                                    
                                    2.5%
                                 | |
| 42 | 2 | 
                                    
                                    0.6%
                                 | |
| 44 | 1 | 
                                    
                                    0.3%
                                 | |
| 50 | 31 | 
                                    
                                    9.6%
                                 | |
| 52 | 1 | 
                                    
                                    0.3%
                                 | |
| 55 | 3 | 
                                    
                                    0.9%
                                 | |
| 60 | 8 | 
                                    
                                    2.5%
                                 | |
| 62 | 1 | 
                                    
                                    0.3%
                                 | |
| 64 | 1 | 
                                    
                                    0.3%
                                 | |
| 68 | 1 | 
                                    
                                    0.3%
                                 | |
| 70 | 8 | 
                                    
                                    2.5%
                                 | |
| 75 | 2 | 
                                    
                                    0.6%
                                 | |
| 80 | 7 | 
                                    
                                    2.2%
                                 | |
| 83 | 1 | 
                                    
                                    0.3%
                                 | |
| 85 | 1 | 
                                    
                                    0.3%
                                 | |
| 90 | 2 | 
                                    
                                    0.6%
                                 | |
| 100 | 10 | 
                                    
                                    3.1%
                                 | |
| 105 | 1 | 
                                    
                                    0.3%
                                 | |
| 170 | 1 | 
                                    
                                    0.3%
                                 | |
| 500 | 1 | 
                                    
                                    0.3%
                                 | |
| Sysmiss | 1060 |