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:
| Rider | Manufacturer | Laps | Time/Retired | Grid |
| --- | --- | --- | --- | --- |
| Casey Stoner | Ducati | 22.0 | 42:36.587 | 4.0 |
| Jorge Lorenzo | Yamaha | 22.0 | +5.323 | 1.0 |
| Dani Pedrosa | Honda | 22.0 | +10.600 | 8.0 |
| Andrea Dovizioso | Honda | 22.0 | +13.288 | 9.0 |
| Valentino Rossi | Yamaha | 22.0 | +13.305 | 7.0 |
| James Toseland | Yamaha | 22.0 | +14.040 | 2.0 |
| Colin Edwards | Yamaha | 22.0 | +15.150 | 3.0 |
| Loris Capirossi | Suzuki | 22.0 | +32.505 | 13.0 |
| Randy de Puniet | Honda | 22.0 | +33.003 | 5.0 |
| Nicky Hayden | Honda | 22.0 | +38.354 | 6.0 |
| Marco Melandri | Ducati | 22.0 | +44.284 | 16.0 |
| John Hopkins | Kawasaki | 22.0 | +49.857 | 10.0 |
| Shinya Nakano | Honda | 22.0 | +49.871 | 15.0 |
| Toni Elias | Ducati | 22.0 | +58.532 | 14.0 |
| Sylvain Guintoli | Ducati | 22.0 | +58.930 | 17.0 |
| Anthony West | Kawasaki | 22.0 | +1:05.643 | 18.0 |
| Chris Vermeulen | Suzuki | 21.0 | +1 Lap | 11.0 |
| Alex de Angelis | Honda | 16.0 | Accident | 12.0 |
Question:
What is the average number of laps when the grid number is 9?
Answer:
22.0