| Value | Category | Cases | |
|---|---|---|---|
| -9 | Don't know (spontaneous) | 14 | 
                                    
                                    1.6%
                                 | 
| 0 | 243 | 
                                    
                                    27.7%
                                 | |
| 1 | 59 | 
                                    
                                    6.7%
                                 | |
| 2 | 71 | 
                                    
                                    8.1%
                                 | |
| 3 | 59 | 
                                    
                                    6.7%
                                 | |
| 4 | 30 | 
                                    
                                    3.4%
                                 | |
| 5 | 34 | 
                                    
                                    3.9%
                                 | |
| 6 | 20 | 
                                    
                                    2.3%
                                 | |
| 7 | 21 | 
                                    
                                    2.4%
                                 | |
| 8 | 21 | 
                                    
                                    2.4%
                                 | |
| 9 | 7 | 
                                    
                                    0.8%
                                 | |
| 10 | 40 | 
                                    
                                    4.6%
                                 | |
| 11 | 1 | 
                                    
                                    0.1%
                                 | |
| 12 | 16 | 
                                    
                                    1.8%
                                 | |
| 13 | 8 | 
                                    
                                    0.9%
                                 | |
| 14 | 4 | 
                                    
                                    0.5%
                                 | |
| 15 | 31 | 
                                    
                                    3.5%
                                 | |
| 16 | 9 | 
                                    
                                    1%
                                 | |
| 17 | 2 | 
                                    
                                    0.2%
                                 | |
| 18 | 4 | 
                                    
                                    0.5%
                                 | |
| 19 | 1 | 
                                    
                                    0.1%
                                 | |
| 20 | 25 | 
                                    
                                    2.8%
                                 | |
| 21 | 3 | 
                                    
                                    0.3%
                                 | |
| 22 | 8 | 
                                    
                                    0.9%
                                 | |
| 23 | 3 | 
                                    
                                    0.3%
                                 | |
| 24 | 4 | 
                                    
                                    0.5%
                                 | |
| 25 | 15 | 
                                    
                                    1.7%
                                 | |
| 26 | 1 | 
                                    
                                    0.1%
                                 | |
| 27 | 1 | 
                                    
                                    0.1%
                                 | |
| 28 | 2 | 
                                    
                                    0.2%
                                 | |
| 30 | 19 | 
                                    
                                    2.2%
                                 | |
| 32 | 2 | 
                                    
                                    0.2%
                                 | |
| 33 | 1 | 
                                    
                                    0.1%
                                 | |
| 34 | 2 | 
                                    
                                    0.2%
                                 | |
| 35 | 7 | 
                                    
                                    0.8%
                                 | |
| 36 | 3 | 
                                    
                                    0.3%
                                 | |
| 39 | 1 | 
                                    
                                    0.1%
                                 | |
| 40 | 18 | 
                                    
                                    2.1%
                                 | |
| 42 | 1 | 
                                    
                                    0.1%
                                 | |
| 43 | 2 | 
                                    
                                    0.2%
                                 | |
| 45 | 7 | 
                                    
                                    0.8%
                                 | |
| 48 | 1 | 
                                    
                                    0.1%
                                 | |
| 49 | 1 | 
                                    
                                    0.1%
                                 | |
| 50 | 16 | 
                                    
                                    1.8%
                                 | |
| 55 | 2 | 
                                    
                                    0.2%
                                 | |
| 60 | 2 | 
                                    
                                    0.2%
                                 | |
| 63 | 1 | 
                                    
                                    0.1%
                                 | |
| 65 | 3 | 
                                    
                                    0.3%
                                 | |
| 70 | 1 | 
                                    
                                    0.1%
                                 | |
| 75 | 3 | 
                                    
                                    0.3%
                                 | |
| 77 | 1 | 
                                    
                                    0.1%
                                 | |
| 78 | 1 | 
                                    
                                    0.1%
                                 | |
| 80 | 6 | 
                                    
                                    0.7%
                                 | |
| 90 | 2 | 
                                    
                                    0.2%
                                 | |
| 97 | 1 | 
                                    
                                    0.1%
                                 | |
| 99 | 1 | 
                                    
                                    0.1%
                                 | |
| 100 | 6 | 
                                    
                                    0.7%
                                 | |
| 115 | 1 | 
                                    
                                    0.1%
                                 | |
| 140 | 2 | 
                                    
                                    0.2%
                                 | |
| 150 | 3 | 
                                    
                                    0.3%
                                 | |
| 170 | 3 | 
                                    
                                    0.3%
                                 | |
| 1000 | 1 | 
                                    
                                    0.1%
                                 | |
| Sysmiss | 1819 |