How many Antonov An-2 Colt aircraft are in service?
CREATE TABLE table_67379 (
    "Aircraft" text,
    "Origin" text,
    "Type" text,
    "Versions" text,
    "In service" real
)
SELECT AVG("In service") FROM table_67379 WHERE "Aircraft" = 'antonov an-2 colt'
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: How many Antonov An-2 Colt aircraft are in service? ### Input: CREATE TABLE table_67379 (
    "Aircraft" text,
    "Origin" text,
    "Type" text,
    "Versions" text,
    "In service" real
) ### Response: SELECT AVG("In service") FROM table_67379 WHERE "Aircraft" = 'antonov an-2 colt'