"GP","ʊ","","N" "","84","(84)","1983N12" "","83","(83)","1983N09" "","82","(82)","1983N06" "","81","(81)","1983N03" "","80","(80)","1982N12" "","79","(79)","1982N09" "","78","(78)","1982N06" "","77","(77)","1982N03" "","76","(76)","1981N12" "","75","(75)","1981N09" "","74","(74)","1981N06" "","73","(73)","1981N03" "","72","(72)","1980N12" "","71","(71)","1980N09" "","69","(69)","1980N03" "","68","(68)","1979N12" "","67","(67)","1979N09" "","66","(66)","1979N06" "","65","(65)","1979N03" "","64","(64)","1978N12" "","63","(63)","1978N09" "","62","(62)","1978N06" "","62","(62)","1978N06" "","61","(61)","1978N03" "","60","(60)","1977N12" "","59","(59)","1977N09" "","59","(59)","1977N09" "","58","(58)","1977N06" "","57","(57)","1977N03" "","56","(56)","1976N12" "","55","(55)","1976N09" "","54","(54)","1976N06" "","53","(53)","1976N03" "","15","(15)","1966N09"