CREATE TABLE table_31540 ("Year" FLOAT, "Competition" TEXT, "Venue" TEXT, "Position" TEXT, "Event" TEXT)

What is the average year for Ponce, Puerto Rico events?
SELECT AVG("Year") FROM table_31540 WHERE "Venue" = 'ponce, puerto rico'
SELECT AVG("Year") FROM "table_31540" WHERE "Venue" = 'ponce, puerto rico'