| Value | Category | Cases | |
|---|---|---|---|
| 0 | NONE | 256 |
13%
|
| 1 | ONE | 42 |
2.1%
|
| 2 | TWO | 68 |
3.5%
|
| 3 | THREE | 102 |
5.2%
|
| 4 | FOUR | 66 |
3.4%
|
| 5 | FIVE | 133 |
6.8%
|
| 6 | SIX | 57 |
2.9%
|
| 7 | SEVEN | 39 |
2%
|
| 8 | EIGHT | 28 |
1.4%
|
| 9 | NINE | 6 |
0.3%
|
| 10 | TEN OR MORE BOOKS | 1041 |
52.9%
|
| Sysmiss | 129 |
6.6%
|