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 | Season | Races | Poles | Percentage |
| --- | --- | --- | --- | --- |
| Nigel Mansell | 1992.0 | 16.0 | 14.0 | 88% |
| Ayrton Senna | 1988.0 | 16.0 | 13.0 | 81% |
| Ayrton Senna | 1989.0 | 16.0 | 13.0 | 81% |
| Alain Prost | 1993.0 | 16.0 | 13.0 | 81% |
| Sebastian Vettel | 2011.0 | 19.0 | 15.0 | 79% |
| Juan Manuel Fangio | 1956.0 | 8.0 | 6.0 | 75% |
| Jim Clark | 1963.0 | 10.0 | 7.0 | 70% |
| Mika Häkkinen | 1999.0 | 16.0 | 11.0 | 69% |
| Jim Clark | 1962.0 | 9.0 | 6.0 | 67% |
| Alberto Ascari | 1953.0 | 9.0 | 6.0 | 67% |
Question:
Which is the highest Season with a Percentage of 67% and Alberto Ascari as a Driver?
Answer:
1953.0