what is the average number of times johan museeuw starred ?
CREATE TABLE table_204_156 (
    id number,
    "year" number,
    "crystal bicycle\n(best professional cyclist)" text,
    "best young rider" text,
    "best manager" text,
    "crystal drop of sweat\n(best helper)" text
)
SELECT COUNT(*) FROM table_204_156 WHERE "crystal bicycle\n(best professional cyclist)" = 'johan museeuw'
Below are sql tables schemas paired with instruction that describes a task. Using valid SQLite, write a response that appropriately completes the request for the provided tables. ### Instruction: what is the average number of times johan museeuw starred ? ### Input: CREATE TABLE table_204_156 (
    id number,
    "year" number,
    "crystal bicycle\n(best professional cyclist)" text,
    "best young rider" text,
    "best manager" text,
    "crystal drop of sweat\n(best helper)" text
) ### Response: SELECT COUNT(*) FROM table_204_156 WHERE "crystal bicycle\n(best professional cyclist)" = 'johan museeuw'