| Value | Category | Cases | |
|---|---|---|---|
| -99 | Don't know | 0 | 
                                    
                                    0%
                                 | 
| -9 | Don't know (spontaneous) | 0 | 
                                    
                                    0%
                                 | 
| 2 | 2 | 
                                    
                                    1%
                                 | |
| 3 | 3 | 
                                    
                                    1.6%
                                 | |
| 4 | 3 | 
                                    
                                    1.6%
                                 | |
| 5 | 9 | 
                                    
                                    4.7%
                                 | |
| 6 | 12 | 
                                    
                                    6.2%
                                 | |
| 7 | 7 | 
                                    
                                    3.6%
                                 | |
| 8 | 5 | 
                                    
                                    2.6%
                                 | |
| 9 | 6 | 
                                    
                                    3.1%
                                 | |
| 10 | 7 | 
                                    
                                    3.6%
                                 | |
| 11 | 5 | 
                                    
                                    2.6%
                                 | |
| 12 | 7 | 
                                    
                                    3.6%
                                 | |
| 13 | 4 | 
                                    
                                    2.1%
                                 | |
| 14 | 2 | 
                                    
                                    1%
                                 | |
| 15 | 6 | 
                                    
                                    3.1%
                                 | |
| 16 | 4 | 
                                    
                                    2.1%
                                 | |
| 17 | 2 | 
                                    
                                    1%
                                 | |
| 18 | 4 | 
                                    
                                    2.1%
                                 | |
| 19 | 1 | 
                                    
                                    0.5%
                                 | |
| 20 | 4 | 
                                    
                                    2.1%
                                 | |
| 22 | 5 | 
                                    
                                    2.6%
                                 | |
| 23 | 2 | 
                                    
                                    1%
                                 | |
| 24 | 2 | 
                                    
                                    1%
                                 | |
| 25 | 3 | 
                                    
                                    1.6%
                                 | |
| 26 | 2 | 
                                    
                                    1%
                                 | |
| 27 | 2 | 
                                    
                                    1%
                                 | |
| 28 | 1 | 
                                    
                                    0.5%
                                 | |
| 29 | 1 | 
                                    
                                    0.5%
                                 | |
| 30 | 7 | 
                                    
                                    3.6%
                                 | |
| 32 | 1 | 
                                    
                                    0.5%
                                 | |
| 33 | 2 | 
                                    
                                    1%
                                 | |
| 35 | 4 | 
                                    
                                    2.1%
                                 | |
| 36 | 1 | 
                                    
                                    0.5%
                                 | |
| 39 | 1 | 
                                    
                                    0.5%
                                 | |
| 40 | 3 | 
                                    
                                    1.6%
                                 | |
| 41 | 1 | 
                                    
                                    0.5%
                                 | |
| 42 | 2 | 
                                    
                                    1%
                                 | |
| 43 | 3 | 
                                    
                                    1.6%
                                 | |
| 45 | 4 | 
                                    
                                    2.1%
                                 | |
| 46 | 1 | 
                                    
                                    0.5%
                                 | |
| 50 | 4 | 
                                    
                                    2.1%
                                 | |
| 52 | 2 | 
                                    
                                    1%
                                 | |
| 55 | 2 | 
                                    
                                    1%
                                 | |
| 56 | 1 | 
                                    
                                    0.5%
                                 | |
| 58 | 2 | 
                                    
                                    1%
                                 | |
| 60 | 3 | 
                                    
                                    1.6%
                                 | |
| 65 | 2 | 
                                    
                                    1%
                                 | |
| 67 | 1 | 
                                    
                                    0.5%
                                 | |
| 68 | 1 | 
                                    
                                    0.5%
                                 | |
| 75 | 1 | 
                                    
                                    0.5%
                                 | |
| 78 | 1 | 
                                    
                                    0.5%
                                 | |
| 80 | 1 | 
                                    
                                    0.5%
                                 | |
| 88 | 1 | 
                                    
                                    0.5%
                                 | |
| 94 | 2 | 
                                    
                                    1%
                                 | |
| 95 | 1 | 
                                    
                                    0.5%
                                 | |
| 98 | 1 | 
                                    
                                    0.5%
                                 | |
| 99 | 2 | 
                                    
                                    1%
                                 | |
| 100 | 1 | 
                                    
                                    0.5%
                                 | |
| 102 | 1 | 
                                    
                                    0.5%
                                 | |
| 120 | 1 | 
                                    
                                    0.5%
                                 | |
| 125 | 1 | 
                                    
                                    0.5%
                                 | |
| 129 | 1 | 
                                    
                                    0.5%
                                 | |
| 150 | 3 | 
                                    
                                    1.6%
                                 | |
| 170 | 1 | 
                                    
                                    0.5%
                                 | |
| 180 | 1 | 
                                    
                                    0.5%
                                 | |
| 190 | 1 | 
                                    
                                    0.5%
                                 | |
| 220 | 1 | 
                                    
                                    0.5%
                                 | |
| 230 | 1 | 
                                    
                                    0.5%
                                 | |
| 240 | 1 | 
                                    
                                    0.5%
                                 | |
| 245 | 1 | 
                                    
                                    0.5%
                                 | |
| 250 | 2 | 
                                    
                                    1%
                                 | |
| 252 | 1 | 
                                    
                                    0.5%
                                 | |
| 280 | 1 | 
                                    
                                    0.5%
                                 | |
| 300 | 1 | 
                                    
                                    0.5%
                                 | |
| 426 | 1 | 
                                    
                                    0.5%
                                 | |
| 536 | 1 | 
                                    
                                    0.5%
                                 | |
| 1200 | 1 | 
                                    
                                    0.5%
                                 | |
| 1780 | 1 | 
                                    
                                    0.5%
                                 | |
| Sysmiss | 49 |