| Value | Category | Cases | |
|---|---|---|---|
| 1 | At the time of the sale | 190 |
75.4%
|
| 2 | Within one week | 27 |
10.7%
|
| 3 | Within one month | 18 |
7.1%
|
| 4 | One month or more | 17 |
6.7%
|
| Sysmiss | 3724 |