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 |
| --- | --- | --- | --- | --- |
| 1978.0 | Mario Deliotti Racing | Ensign N175 | Ford V8 | 0.0 |
| 1979.0 | Candy Tyrrell Team | Tyrrell 009 | Ford V8 | 0.0 |
| 1980.0 | Shadow Cars | Shadow DN11 | Ford V8 | 0.0 |
| 1980.0 | Shadow Cars | Shadow DN12 | Ford V8 | 0.0 |
| 1980.0 | Unipart Racing Team | Ensign N180 | Ford V8 | 0.0 |
| 1980.0 | RAM Theodore | Williams FW07B | Ford V8 | 0.0 |
| 1982.0 | Theodore Racing Team | Theodore TY02 | Ford V8 | 0.0 |
| 1982.0 | John Player Team Lotus | Lotus 91 | Ford V8 | 0.0 |
Question:
Name the total number of years for chassis of ensign n175
Answer:
1.0