What 1973 has a 1978 of 75%?
CREATE TABLE table_name_31 (Id VARCHAR)
SELECT 1973 FROM table_name_31 WHERE 1978 = "75%"
### Context: CREATE TABLE table_name_31 (Id VARCHAR) ### Question: What 1973 has a 1978 of 75%? ### Answer: SELECT 1973 FROM table_name_31 WHERE 1978 = "75%"