Below is an instruction that describes a task. Write a response that appropriately completes the request.

### Instruction:
Which year has a total of 0 points and a chassis of Toleman tg181?

### Inputs:
table_name: table, columns: ['Year', 'Entrant', 'Chassis', 'Engine', 'Points']

### Response:
SELECT AVG Year FROM table WHERE Points = 0 AND Chassis = toleman tg181