| Value | Category | Cases | |
|---|---|---|---|
| 0 | NONE | 299 |
17.9%
|
| 1 | ONE | 86 |
5.2%
|
| 2 | TWO | 120 |
7.2%
|
| 3 | THREE | 106 |
6.4%
|
| 4 | FOUR | 67 |
4%
|
| 5 | FIVE | 69 |
4.1%
|
| 6 | SIX | 15 |
0.9%
|
| 7 | SEVEN | 17 |
1%
|
| 8 | EIGHT | 8 |
0.5%
|
| 9 | NINE | 5 |
0.3%
|
| 10 | TEN OR MORE BOOKS | 172 |
10.3%
|
| Sysmiss | 702 |
42.1%
|