CREATE TABLE table_204_349 (id DECIMAL, "year" DECIMAL, "conservative\ councillors" DECIMAL, "labour\ councillors" DECIMAL, "independent\ councillors" DECIMAL, "liberal\ councillors" DECIMAL)

what is the last year listed on this chart ?
SELECT "year" FROM table_204_349 ORDER BY id DESC LIMIT 1
SELECT "year" FROM "table_204_349" ORDER BY "id" DESC NULLS LAST LIMIT 1