| Value | Category | Cases | |
|---|---|---|---|
| 1 | At the time of the sale | 46 |
70.8%
|
| 2 | Within one week | 6 |
9.2%
|
| 3 | Within one month | 11 |
16.9%
|
| 4 | One month or more | 2 |
3.1%
|
| Sysmiss | 3911 |