| Value | Category | Cases | |
|---|---|---|---|
| 1 | None | 134 |
87%
|
| 2 | between 1 and 20 books | 14 |
9.1%
|
| 3 | between 21 and 50 books | 2 |
1.3%
|
| 4 | More than 50 books | 4 |
2.6%
|
| Sysmiss | 42 |