| Value | Category |
|---|---|
| 0 | My own copy which I personally bought |
| 1 | My own copy which I personally subscribed to |
| 2 | A copy bought by another household member |
| 3 | A copy subscribed to by another household member |
| 4 | A relative's or friend's copy |
| 5 | An office or work copy |
| 6 | Other |
| Sysmiss |