| Value | Category | Cases | |
|---|---|---|---|
| 1 | General purpose | 144 |
72%
|
| 2 | Instructional materials | 17 |
8.5%
|
| 3 | Not specified | 20 |
10%
|
| 9 | Other (specify) | 0 |
0%
|
| 99 | NA | 19 |
9.5%
|