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 | Points |
| --- | --- | --- | --- | --- |
| 1966.0 | Tyrrell Racing Organisation | Matra MS5 (F2) | BRM Straight-4 | 0.0 |
| 1967.0 | Bayerische Motoren Werke | Lola T100 | BMW Straight-4 | 0.0 |
| 1968.0 | Bayerische Motoren Werke | Lola T100 | BMW Straight-4 | 0.0 |
| 1969.0 | Bayerische Motoren Werke | BMW T269 (F2) | BMW Straight-4 | 0.0 |
| 1970.0 | Hubert Hahne | March 701 | Cosworth V8 | 0.0 |
Question:
Name the total number of years for brm straight-4
Answer:
1.0