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 | Start | Qual | Rank | Finish | Laps |
| --- | --- | --- | --- | --- | --- |
| 1950 | – | – | – | – | – |
| 1951 | 20 | 133.725 | 16 | 29 | 29 |
| 1952 | 8 | 138.212 | 2 | 17 | 191 |
| 1953 | 1 | 138.392 | 1 | 1 | 200 |
| 1954 | 19 | 138.478 | 15 | 1 | 200 |
| 1955 | 5 | 141.071 | 3 | 25 | 56 |
| Totals | Totals | Totals | Totals | Totals | 676 |
Question:
What ranking that had a start of 19?
Answer:
15.0