CREATE TABLE table_name_67 (year NUMBER, total_score VARCHAR2, country VARCHAR2)

When the United States had a total score of 274 what was the average year?
SELECT AVG(year) FROM table_name_67 WHERE total_score = "274" AND country = "united states"
SELECT AVG("year") FROM "table_name_67" WHERE "274" = "total_score" AND "country" = "united states"