CREATE TABLE table_68570 ("Year" FLOAT, "Competition" CLOB, "Venue" CLOB, "Position" CLOB, "Event" CLOB)

What year was the venue in Barcelona, Spain?
SELECT MIN("Year") FROM table_68570 WHERE "Venue" = 'barcelona, spain'
SELECT MIN("Year") FROM "table_68570" WHERE "Venue" = 'barcelona, spain'