Please read the following table in Markdown format and then answer the question according to the table. Table cells in one row are seperated by '|', and different rows are seperated by '
'.

Table:
| Driver | Constructor | Laps | Time/Retired | Grid |
| --- | --- | --- | --- | --- |
| Jackie Stewart | Matra - Ford | 84.0 | 1:55:55.6 | 2.0 |
| Jacky Ickx | Brabham - Ford | 83.0 | + 1 Lap | 4.0 |
| Bruce McLaren | McLaren - Ford | 83.0 | + 1 Lap | 7.0 |
| Jochen Rindt | Lotus - Ford | 83.0 | + 1 Lap | 1.0 |
| Piers Courage | Brabham - Ford | 83.0 | + 1 Lap | 10.0 |
| Vic Elford | McLaren - Ford | 82.0 | + 2 Laps | 11.0 |
| Graham Hill | Lotus - Ford | 82.0 | + 2 Laps | 12.0 |
| Jo Siffert | Lotus - Ford | 81.0 | + 3 Laps | 9.0 |
| Jean-Pierre Beltoise | Matra - Ford | 78.0 | + 6 Laps | 17.0 |
| John Miles | Lotus - Ford | 75.0 | + 9 Laps | 14.0 |
| Pedro Rodríguez | Ferrari | 61.0 | Engine | 8.0 |
| Chris Amon | Ferrari | 45.0 | Gearbox | 5.0 |
| Denny Hulme | McLaren - Ford | 27.0 | Ignition | 3.0 |
| Jackie Oliver | BRM | 19.0 | Transmission | 13.0 |
| Jo Bonnier | Lotus - Ford | 6.0 | Engine | 16.0 |
| Derek Bell | McLaren - Ford | 5.0 | Suspension | 15.0 |
| John Surtees | BRM | 1.0 | Suspension | 6.0 |
Question:
How many laps did Jackie Oliver do?
Answer:
19.0