| Value | Category | Cases | |
|---|---|---|---|
| 0 | NONE | 8152 |
88.2%
|
| 1 | 184 |
2%
|
|
| 2 | 281 |
3%
|
|
| 3 | 207 |
2.2%
|
|
| 4 | 99 |
1.1%
|
|
| 5 | 108 |
1.2%
|
|
| 6 | 48 |
0.5%
|
|
| 7 | 17 |
0.2%
|
|
| 8 | 14 |
0.2%
|
|
| 9 | 10 |
0.1%
|
|
| 10 | TEN OR MORE BOOKS | 118 |
1.3%
|
| 99 | NO RESPONSE | 4 |
0%
|
| Sysmiss | 6371 |