| Value | Category | Cases | |
|---|---|---|---|
| 0 | NONE | 3801 |
48.6%
|
| 1 | 298 |
3.8%
|
|
| 2 | 287 |
3.7%
|
|
| 3 | 122 |
1.6%
|
|
| 4 | 51 |
0.7%
|
|
| 5 | 53 |
0.7%
|
|
| 6 | 12 |
0.2%
|
|
| 7 | 6 |
0.1%
|
|
| 8 | 4 |
0.1%
|
|
| 9 | 2 |
0%
|
|
| 10 | TEN OR MORE BOOKS | 24 |
0.3%
|
| Sysmiss | 3164 |
40.4%
|