CREATE TABLE table_203_91 (id DECIMAL, "year" DECIMAL, "competition" TEXT, "venue" TEXT, "position" TEXT, "event" TEXT, "notes" TEXT)

in which olympic games did arasay thondike not finish in the top 20 ?
SELECT "year" FROM table_203_91 WHERE "competition" = 'olympic games' AND "position" > 20
SELECT "year" FROM "table_203_91" WHERE "competition" = 'olympic games' AND "position" > 20