4% Est. 2000 1.081600 0.924556 4% Est. 2005 1.731676 0.577475 4% Est. 2005 7.762944 0.128817 4% Est. 1992 10.819121 0.092429 4% Est. 1998 1.000000 1.000000 6.4509% 1972 6.199691 0.161298 4.7304% 1971 3.415395 0.292792 5.7132% 1970 1.757313 0.569050 5.5272% 1969 3.491202 0.286434 5.5714% 1968 4.960657 0.201586 5.0148% 1967 2.393332 0.417828 2.5719% 1966 0.752678 1.328590 3.5485% 1965 1.138057 0.878691 2.7360% 1964 2.164516 0.461997 1.5423% 1963 0.344685 2.901200 1.5697% 1962 0.969592 1.031362 2.2421% 1961 3.586305 0.278839 0.9709% 1960 3.911433 0.255661
slipperiness