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_166346_1 (joined_opec VARCHAR, production___bbl__day_ VARCHAR)
### Question:
When did the country that produced 1,213,000 (21st) bbl/day join Opec?
### Answer:
SELECT joined_opec FROM table_166346_1 WHERE production___bbl__day_ = "1,213,000 (21st)"