CREATE TABLE table_14877 ("Year" FLOAT, "Entrant" CLOB, "Chassis" CLOB, "Engine" CLOB, "Points" FLOAT)

What's the top year with the Chassis ats hs1?
SELECT MAX("Year") FROM table_14877 WHERE "Chassis" = 'ats hs1'
SELECT MAX("Year") FROM "table_14877" WHERE "Chassis" = 'ats hs1'