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_16072430_1 (air_date VARCHAR, weekly_rank VARCHAR)
### Question:
What broadcast dates have a weekly rank of 73?
### Answer:
SELECT COUNT(air_date) FROM table_16072430_1 WHERE weekly_rank = "73"