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 | Entrant | Chassis | Engine | Pts. |
| --- | --- | --- | --- | --- |
| 1960.0 | Team Lotus | Lotus 18 | Climax I4 | 8 |
| 1961.0 | Team Lotus | Lotus 21 | Climax I4 | 11 |
| 1962.0 | Team Lotus | Lotus 25 | Climax V8 | 30 |
| 1963.0 | Team Lotus | Lotus 25 | Climax V8 | 54 (73) |
| 1964.0 | Team Lotus | Lotus 25 | Climax V8 | 32 |
| 1964.0 | Team Lotus | Lotus 33 | Climax V8 | 32 |
| 1965.0 | Team Lotus | Lotus 33 | Climax V8 | 54 |
| 1965.0 | Team Lotus | Lotus 25 | Climax V8 | 54 |
| 1966.0 | Team Lotus | Lotus 33 | Climax V8 | 16 |
| 1966.0 | Team Lotus | Lotus 43 | BRM H16 | 16 |
| 1967.0 | Team Lotus | Lotus 43 | BRM H16 | 41 |
| 1967.0 | Team Lotus | Lotus 33 | Climax V8 | 41 |
| 1967.0 | Team Lotus | Lotus 49 | Ford V8 | 41 |
| 1968.0 | Team Lotus | Lotus 49 | Ford V8 | 9 |
Question:
What is the year of the Lotus 25 chassis?
Answer:
1963.5