CREATE TABLE table_203_835 (id DECIMAL, "season" TEXT, "club" TEXT, "country" TEXT, "competition" TEXT, "apps." DECIMAL, "goals" DECIMAL)

in which season did gunter thiebaut score the most goals ?
SELECT "season" FROM table_203_835 ORDER BY "goals" DESC LIMIT 1
SELECT "season" FROM "table_203_835" ORDER BY "goals" DESC NULLS LAST LIMIT 1