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_2511876_1 (year VARCHAR, league VARCHAR)
### Question:
Name the total number of years for usisl pro league
### Answer:
SELECT COUNT(year) FROM table_2511876_1 WHERE league = "USISL Pro league"