CREATE TABLE table_202_7 (id DECIMAL, "year" TEXT, "title" TEXT, "role" TEXT, "notes" TEXT)

in what year did jon stewart have the highest number of roles ?
SELECT "year" FROM table_202_7 GROUP BY "year" ORDER BY COUNT("role") DESC LIMIT 1
SELECT "year" FROM "table_202_7" GROUP BY "year" ORDER BY COUNT("role") DESC NULLS LAST LIMIT 1