CREATE TABLE table_31564 ("Year" FLOAT, "Competition" CLOB, "Date" CLOB, "Location" CLOB, "Score" CLOB, "Result" CLOB)

How many years has there been a competition in Helsinki?
SELECT COUNT("Year") FROM table_31564 WHERE "Location" = 'helsinki'
SELECT COUNT("Year") FROM "table_31564" WHERE "Location" = 'helsinki'