| Value | Category | Cases | |
|---|---|---|---|
| 0 | NONE | 1575 |
42.2%
|
| 1 | ONE | 321 |
8.6%
|
| 2 | TWO | 560 |
15%
|
| 3 | THREE | 315 |
8.4%
|
| 4 | FOUR | 227 |
6.1%
|
| 5 | FIVE | 169 |
4.5%
|
| 6 | SIX | 137 |
3.7%
|
| 7 | SEVEN | 81 |
2.2%
|
| 8 | EIGHT | 54 |
1.4%
|
| 9 | NINE | 13 |
0.3%
|
| 10 | TEN OR MORE BOOKS | 230 |
6.2%
|
| Sysmiss | 47 |
1.3%
|