CREATE TABLE table_55306 ("Year" FLOAT, "Animal" CLOB, "Artist" CLOB, "Finish" CLOB, "Mintage" FLOAT, "Issue Price" CLOB)

What year was the downy woodpecker coin created?
SELECT SUM("Year") FROM table_55306 WHERE "Animal" = 'downy woodpecker'
SELECT SUM("Year") FROM "table_55306" WHERE "Animal" = 'downy woodpecker'