SELECT COUNT(DISTINCT "champion") FROM table_203_341 WHERE "season" >= 2000 AND "season" <= 2005
how many different champions were there in the 2000 - 2005 seasons ?
CREATE TABLE table_203_341 (
    id number,
    "season" text,
    "champion" text,
    "runner-up" text,
    "score" text,
    "third place" text
)