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 |
| --- | --- | --- | --- | --- |
| 1970.0 | Scuderia Ferrari SpA | Ferrari 312B | Ferrari Flat-12 | 33 |
| 1971.0 | Scuderia Ferrari SpA | Ferrari 312B | Ferrari Flat-12 | 13 |
| 1971.0 | Scuderia Ferrari SpA | Ferrari 312B2 | Ferrari Flat-12 | 13 |
| 1972.0 | Scuderia Ferrari SpA | Ferrari 312B2 | Ferrari Flat-12 | 15 |
| 1973.0 | Marlboro BRM | BRM P160D | BRM V12 | 2 |
| 1973.0 | Marlboro BRM | BRM P160E | BRM V12 | 2 |
| 1974.0 | Scuderia Ferrari SpA | Ferrari 312B3 | Ferrari Flat-12 | 52 |
| 1975.0 | Scuderia Ferrari SpA | Ferrari 312B3 | Ferrari Flat-12 | 25 |
| 1975.0 | Scuderia Ferrari SpA | Ferrari 312T | Ferrari Flat-12 | 25 |
| 1976.0 | Scuderia Ferrari SpA | Ferrari 312T | Ferrari Flat-12 | 31 |
| 1976.0 | Scuderia Ferrari SpA | Ferrari 312T2 | Ferrari Flat-12 | 31 |
| 1977.0 | Team Tissot Ensign | Ensign N177 | Cosworth V8 | 5 |
| 1978.0 | Shadow Racing Team | Shadow DN8 | Cosworth V8 | 4 |
| 1978.0 | Shadow Racing Team | Shadow DN9 | Cosworth V8 | 4 |
| 1979.0 | Albilad-Saudi Racing Team | Williams FW06 | Cosworth V8 | 29 (32) |
| 1979.0 | Albilad-Saudi Racing Team | Williams FW07 | Cosworth V8 | 29 (32) |
| 1980.0 | Unipart Racing Team | Ensign N180 | Cosworth V8 | 0 |
Question:
What is the earliest year a chassis of ferrari 312t and results of 31 points occurred?
Answer:
1976.0