| Value | Category | Cases | |
|---|---|---|---|
| 1 | 1 | 
                                    
                                    0.1%
                                 | |
| 1.2 | 2 | 
                                    
                                    0.3%
                                 | |
| 1.3 | 1 | 
                                    
                                    0.1%
                                 | |
| 2 | 10 | 
                                    
                                    1.3%
                                 | |
| 2.4 | 1 | 
                                    
                                    0.1%
                                 | |
| 2.5 | 4 | 
                                    
                                    0.5%
                                 | |
| 2.7 | 1 | 
                                    
                                    0.1%
                                 | |
| 2.9 | 1 | 
                                    
                                    0.1%
                                 | |
| 3 | 33 | 
                                    
                                    4.3%
                                 | |
| 3.5 | 4 | 
                                    
                                    0.5%
                                 | |
| 3.8 | 4 | 
                                    
                                    0.5%
                                 | |
| 4 | 28 | 
                                    
                                    3.7%
                                 | |
| 4.1 | 1 | 
                                    
                                    0.1%
                                 | |
| 4.2 | 3 | 
                                    
                                    0.4%
                                 | |
| 4.3 | 2 | 
                                    
                                    0.3%
                                 | |
| 4.5 | 11 | 
                                    
                                    1.4%
                                 | |
| 4.6 | 1 | 
                                    
                                    0.1%
                                 | |
| 4.7 | 2 | 
                                    
                                    0.3%
                                 | |
| 5 | 96 | 
                                    
                                    12.6%
                                 | |
| 5.5 | 23 | 
                                    
                                    3%
                                 | |
| 5.6 | 1 | 
                                    
                                    0.1%
                                 | |
| 5.9 | 1 | 
                                    
                                    0.1%
                                 | |
| 6 | 146 | 
                                    
                                    19.2%
                                 | |
| 6.1 | 1 | 
                                    
                                    0.1%
                                 | |
| 6.3 | 1 | 
                                    
                                    0.1%
                                 | |
| 6.5 | 23 | 
                                    
                                    3%
                                 | |
| 6.6 | 1 | 
                                    
                                    0.1%
                                 | |
| 6.7 | 5 | 
                                    
                                    0.7%
                                 | |
| 6.8 | 1 | 
                                    
                                    0.1%
                                 | |
| 6.9 | 1 | 
                                    
                                    0.1%
                                 | |
| 7 | 146 | 
                                    
                                    19.2%
                                 | |
| 7.2 | 1 | 
                                    
                                    0.1%
                                 | |
| 7.3 | 3 | 
                                    
                                    0.4%
                                 | |
| 7.4 | 2 | 
                                    
                                    0.3%
                                 | |
| 7.5 | 19 | 
                                    
                                    2.5%
                                 | |
| 7.6 | 1 | 
                                    
                                    0.1%
                                 | |
| 8 | 121 | 
                                    
                                    15.9%
                                 | |
| 8.3 | 1 | 
                                    
                                    0.1%
                                 | |
| 8.4 | 1 | 
                                    
                                    0.1%
                                 | |
| 8.5 | 4 | 
                                    
                                    0.5%
                                 | |
| 9 | 23 | 
                                    
                                    3%
                                 | |
| 10 | 15 | 
                                    
                                    2%
                                 | |
| 11 | 2 | 
                                    
                                    0.3%
                                 | |
| 12.4 | 1 | 
                                    
                                    0.1%
                                 | |
| 77 | Refuse to answer | 6 | 
                                    
                                    0.8%
                                 | 
| 99 | Do not know | 3 | 
                                    
                                    0.4%
                                 | 
| Sysmiss | 5461 |