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_28744929_1 (joined_acc INTEGER, institution VARCHAR)
### Question:
what year did north carolina institution join the acc?
### Answer:
SELECT MAX(joined_acc) FROM table_28744929_1 WHERE institution = "North Carolina"