| Value | Category | Cases | |
|---|---|---|---|
| 1 | JANUARY | 1 |
0.1%
|
| 3 | MARCH | 2 |
0.1%
|
| 7 | JULY | 1 |
0.1%
|
| 10 | OCTOBER | 2 |
0.1%
|
| 99 | NO RESPONSE | 1 |
0.1%
|
| Sysmiss | 1960 |
99.6%
|