Below is an context that describes a sql query, paired with an question that provides further information. Write an answer that appropriately completes the request.  # noqa: E501
### Context:
CREATE TABLE table_name_88 (year INTEGER, points VARCHAR, chassis VARCHAR)
### Question:
Which year has a total of 0 points and a chassis of Toleman tg181?
### Answer:
SELECT AVG(year) FROM table_name_88 WHERE points = 0 AND chassis = "toleman tg181"