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:
| Year | Chassis | Engine | Start | Finish |
| --- | --- | --- | --- | --- |
| 1976.0 | Eagle | Offy | 17th | 18th |
| 1977.0 | Wildcat | Offy | DNQ | DNQ |
| 1979.0 | Wildcat | DGS | 22nd | 21st |
| 1981.0 | McLaren | Cosworth | 18th | 3rd |
| 1982.0 | Penske | Cosworth | DNQ | DNQ |
Question:
Name the start for finish being 21st
Answer:
22nd