1964 2.316897 0.431612 1.5423% 1963 4.378369 0.228396 1.5697% 1962 0.129972 7.693979 2.2421% 1961 1.974720 0.506401 0.9709% 1960 2.376946 0.420708 1.6442% 1959 3.707371 0.269733 2.3579% 1958 0.346555 2.885543 2.0623%