In which year were most departments established?
CREATE TABLE management (
    department_id number,
    head_id number,
    temporary_acting text
)

CREATE TABLE head (
    head_id number,
    name text,
    born_state text,
    age number
)

CREATE TABLE department (
    department_id number,
    name text,
    creation text,
    ranking number,
    budget_in_billions number,
    num_employees number
)
SELECT creation FROM department GROUP BY creation ORDER BY COUNT(*) DESC LIMIT 1
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: In which year were most departments established? ### Input: CREATE TABLE management (
    department_id number,
    head_id number,
    temporary_acting text
)

CREATE TABLE head (
    head_id number,
    name text,
    born_state text,
    age number
)

CREATE TABLE department (
    department_id number,
    name text,
    creation text,
    ranking number,
    budget_in_billions number,
    num_employees number
) ### Response: SELECT creation FROM department GROUP BY creation ORDER BY COUNT(*) DESC LIMIT 1