1961 4.333112 0.230781 0.9709% 1960 2.323329 0.430417 1.6442% 1959 0.292592 3.417732 2.3579% 1958 2.020417 0.494947 2.0623% 1957 4.849874 0.206191 3.5571% 1956 0.190637 5.245581 3.3098% 1955 1.157446 0.863971 3.4226%