| Value | Category | Cases | |
|---|---|---|---|
| -9 | Don't know (spontaneous) | 5 |
1.4%
|
| -7 | Not VAT eligible | 7 |
1.9%
|
| -6 | VAT refund not available | 24 |
6.6%
|
| 1 | Yes | 20 |
5.5%
|
| 2 | No | 309 |
84.7%
|