| Value | Category | Cases | |
|---|---|---|---|
| 1 | BP | 1474 |
19.7%
|
| 2 | Caltex | 1185 |
15.9%
|
| 3 | Engen | 2345 |
31.4%
|
| 4 | Exel | 100 |
1.3%
|
| 5 | Sasol | 566 |
7.6%
|
| 6 | Shell | 1137 |
15.2%
|
| 7 | Total | 493 |
6.6%
|
| 8 | Other | 135 |
1.8%
|
| 9 | Do not know | 30 |
0.4%
|
| Sysmiss | 17643 |