| Value | Category | Cases | |
|---|---|---|---|
| -9 | Don't know (spontaneous) | 17 |
4.4%
|
| -7 | Not VAT eligible | 8 |
2.1%
|
| -6 | VAT refund not available | 1 |
0.3%
|
| 1 | Yes | 278 |
71.6%
|
| 2 | No | 84 |
21.6%
|