| Value | Category | Cases | |
|---|---|---|---|
| 0 | NONE | 1944 |
36.3%
|
| 1 | ONE | 97 |
1.8%
|
| 2 | TWO | 200 |
3.7%
|
| 3 | THREE | 188 |
3.5%
|
| 4 | FOUR | 135 |
2.5%
|
| 5 | FIVE | 122 |
2.3%
|
| 6 | SIX | 48 |
0.9%
|
| 7 | SEVEN | 35 |
0.7%
|
| 8 | EIGHT | 31 |
0.6%
|
| 9 | NINE | 16 |
0.3%
|
| 10 | TEN OR MORE BOOKS | 290 |
5.4%
|
| 99 | NO RESPONSE | 4 |
0.1%
|
| Sysmiss | 2250 |