Which years did both of New York's baseball teams play in the World Series?
1921 - New York Giants def. New York Yankees (5-3)1922 - New York Giants def. New York Yankees (4-0)1923 - New York Yankees def. New York Giants (4-2)1936 - New York Yankees def. New York Giants (4-2)1937 - New York Yankees def. New York Giants (4-1)1941 - New York Yankees def. Brooklyn Dodgers (4-1)1947 - New York Yankees def. Brooklyn Dodgers (4-3)1949 - New York Yankees def. Brooklyn Dodgers (4-1)1951 - New York Yankees def. New York Giants (4-2)1952 - New York Yankees def. Brooklyn Dodgers (4-3)1953 - New York Yankees def. Brooklyn Dodgers (4-2)1955 - Brooklyn Dodgers def. New York Yankees (4-3)1956 - New York Yankees def. Brooklyn Dodgers (4-3)2000 - New York Yankees def. New York Mets (4-1)