What year was the downy woodpecker coin created?
CREATE TABLE table_55306 (
    "Year" real,
    "Animal" text,
    "Artist" text,
    "Finish" text,
    "Mintage" real,
    "Issue Price" text
)
SELECT SUM("Year") FROM table_55306 WHERE "Animal" = 'downy woodpecker'
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 year was the downy woodpecker coin created? ### Input: CREATE TABLE table_55306 (
    "Year" real,
    "Animal" text,
    "Artist" text,
    "Finish" text,
    "Mintage" real,
    "Issue Price" text
) ### Response: SELECT SUM("Year") FROM table_55306 WHERE "Animal" = 'downy woodpecker'