CREATE TABLE table_203_710 (id NUMBER, "genre" CLOB, "year" NUMBER, "title" CLOB, "episode" CLOB, "role" CLOB, "notes" CLOB)

what year what his busiest year with the most roles ?
SELECT "year" FROM table_203_710 GROUP BY "year" ORDER BY COUNT("role") DESC LIMIT 1
SELECT "year" FROM "table_203_710" GROUP BY "year" ORDER BY COUNT("role") DESC FETCH FIRST 1 ROWS ONLY