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_17384764_1 (designation VARCHAR, experience VARCHAR)
### Question:
How many faculty members have 20 years of experience? 
### Answer:
SELECT COUNT(designation) FROM table_17384764_1 WHERE experience = "20 years"