| Value | Category | Cases | |
|---|---|---|---|
| 1 | Periodic subscription | 6 |
0.1%
|
| 2 | Buy it | 20 |
0.3%
|
| 3 | Borrow it | 13 |
0.2%
|
| 4 | On the internet | 78 |
1.2%
|
| 5 | For free | 6 |
0.1%
|
| Sysmiss | 6377 |