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 | Entries | Front row starts | Percentage |
| --- | --- | --- | --- | --- |
| Sebastian Vettel | 2011 | 19.0 | 18.0 | 94.73% |
| Ayrton Senna | 1989 | 16.0 | 16.0 | 100.00% |
| Alain Prost | 1993 | 16.0 | 16.0 | 100.00% |
| Damon Hill | 1996 | 16.0 | 16.0 | 100.00% |
| Nigel Mansell | 1992 | 16.0 | 15.0 | 93.75% |
| Ayrton Senna | 1988 | 16.0 | 15.0 | 93.75% |
| Nigel Mansell | 1987 | 15.0 | 14.0 | 93.33% |
| Mika Häkkinen | 1999 | 16.0 | 13.0 | 81.25% |
| Michael Schumacher | 2001 | 17.0 | 13.0 | 76.47% |
| Sebastian Vettel | 2010 | 19.0 | 13.0 | 68.42% |
| Sebastian Vettel | 2013 * | 17.0 | 13.0 | 76.47% |
Question:
What was the highest front row starts for Alain Prost?
Answer:
16.0