| Value | Category | Cases | |
|---|---|---|---|
| 99 | Missing data | 14 | 
                                    
                                    1.2%
                                 | 
| 20000329 | 24 | 
                                    
                                    2%
                                 | |
| 20000330 | 32 | 
                                    
                                    2.7%
                                 | |
| 20000331 | 20 | 
                                    
                                    1.7%
                                 | |
| 20000401 | 18 | 
                                    
                                    1.5%
                                 | |
| 20000402 | 18 | 
                                    
                                    1.5%
                                 | |
| 20000403 | 30 | 
                                    
                                    2.5%
                                 | |
| 20000404 | 36 | 
                                    
                                    3.1%
                                 | |
| 20000405 | 28 | 
                                    
                                    2.4%
                                 | |
| 20000406 | 27 | 
                                    
                                    2.3%
                                 | |
| 20000407 | 17 | 
                                    
                                    1.4%
                                 | |
| 20000410 | 28 | 
                                    
                                    2.4%
                                 | |
| 20000411 | 30 | 
                                    
                                    2.5%
                                 | |
| 20000412 | 32 | 
                                    
                                    2.7%
                                 | |
| 20000413 | 15 | 
                                    
                                    1.3%
                                 | |
| 20000414 | 20 | 
                                    
                                    1.7%
                                 | |
| 20000415 | 16 | 
                                    
                                    1.4%
                                 | |
| 20000417 | 29 | 
                                    
                                    2.5%
                                 | |
| 20000418 | 32 | 
                                    
                                    2.7%
                                 | |
| 20000419 | 31 | 
                                    
                                    2.6%
                                 | |
| 20000420 | 3 | 
                                    
                                    0.3%
                                 | |
| 20000421 | 1 | 
                                    
                                    0.1%
                                 | |
| 20000426 | 16 | 
                                    
                                    1.4%
                                 | |
| 20000427 | 23 | 
                                    
                                    2%
                                 | |
| 20000428 | 17 | 
                                    
                                    1.4%
                                 | |
| 20000429 | 30 | 
                                    
                                    2.5%
                                 | |
| 20000430 | 15 | 
                                    
                                    1.3%
                                 | |
| 20000501 | 25 | 
                                    
                                    2.1%
                                 | |
| 20000502 | 32 | 
                                    
                                    2.7%
                                 | |
| 20000503 | 31 | 
                                    
                                    2.6%
                                 | |
| 20000504 | 15 | 
                                    
                                    1.3%
                                 | |
| 20000505 | 36 | 
                                    
                                    3.1%
                                 | |
| 20000506 | 15 | 
                                    
                                    1.3%
                                 | |
| 20000507 | 8 | 
                                    
                                    0.7%
                                 | |
| 20000508 | 24 | 
                                    
                                    2%
                                 | |
| 20000509 | 15 | 
                                    
                                    1.3%
                                 | |
| 20000510 | 16 | 
                                    
                                    1.4%
                                 | |
| 20000511 | 16 | 
                                    
                                    1.4%
                                 | |
| 20000512 | 16 | 
                                    
                                    1.4%
                                 | |
| 20000513 | 16 | 
                                    
                                    1.4%
                                 | |
| 20000515 | 32 | 
                                    
                                    2.7%
                                 | |
| 20000516 | 16 | 
                                    
                                    1.4%
                                 | |
| 20000517 | 33 | 
                                    
                                    2.8%
                                 | |
| 20000518 | 31 | 
                                    
                                    2.6%
                                 | |
| 20000519 | 24 | 
                                    
                                    2%
                                 | |
| 20000520 | 32 | 
                                    
                                    2.7%
                                 | |
| 20000521 | 17 | 
                                    
                                    1.4%
                                 | |
| 20000524 | 8 | 
                                    
                                    0.7%
                                 | |
| 20000525 | 8 | 
                                    
                                    0.7%
                                 | |
| 20000526 | 16 | 
                                    
                                    1.4%
                                 | |
| 20000527 | 8 | 
                                    
                                    0.7%
                                 | |
| 20000529 | 16 | 
                                    
                                    1.4%
                                 | |
| 20000530 | 16 | 
                                    
                                    1.4%
                                 | |
| 20000531 | 14 | 
                                    
                                    1.2%
                                 | |
| 20000602 | 8 | 
                                    
                                    0.7%
                                 | |
| 20000605 | 16 | 
                                    
                                    1.4%
                                 | |
| 20000606 | 7 | 
                                    
                                    0.6%
                                 | |
| 20000607 | 8 | 
                                    
                                    0.7%
                                 |