I want to see trend of the average of budget in billions by creation
CREATE TABLE head (
    head_ID int,
    name text,
    born_state text,
    age real
)

CREATE TABLE management (
    department_ID int,
    head_ID int,
    temporary_acting text
)

CREATE TABLE department (
    Department_ID int,
    Name text,
    Creation text,
    Ranking int,
    Budget_in_Billions real,
    Num_Employees real
)
SELECT Creation, AVG(Budget_in_Billions) FROM department
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: I want to see trend of the average of budget in billions by creation ### Input: CREATE TABLE head (
    head_ID int,
    name text,
    born_state text,
    age real
)

CREATE TABLE management (
    department_ID int,
    head_ID int,
    temporary_acting text
)

CREATE TABLE department (
    Department_ID int,
    Name text,
    Creation text,
    Ranking int,
    Budget_in_Billions real,
    Num_Employees real
) ### Response: SELECT Creation, AVG(Budget_in_Billions) FROM department