15292000 1950 8032 34000 1 19500621 600 5 15292000 1951 9106 35800 1 19510608 740 36 15292000 1952 9529 43300 1 19520617 880 31 15292000 1953 10090 37700 1 19530607 820 59 15292000 1954 9681 41000 1 19540804 780 31 15292000 1955 10260 56900 1 19550826 1100 31 15292000 1956 11450 51500 1 19560609 940 31 15292000 1957 10380 40600 1 19570608 1200 61 15292000 1958 9476 47800 1 19580803 1100 18 15292000 1959 10560 59700 1 19590824 980 31 15292000 1960 9690 40100 1 19600913 1100 31 15292000 1961 10810 54000 1 19610623 1500 15 15292000 1962 11570 79900 1 19620615 1400 31 15292000 1963 11070 49000 1 19630718 830 30 15292000 1964 9774 85900 1 19640607 660 16 15292000 1965 10170 39900 1 19650628 860 28 15292000 1966 9432 58400 1 19660606 1300 59 15292000 1967 11220 76000 1 19670815 1100 20 15292000 1968 9789 39700 1 19680522 1800 10 15292000 1969 5597 26500 1 19690525 700 33 15292000 1970 7591 31600 1 19700802 750 33 15292000 1971 10250 77700 1 19710810 950 36 15292000 1972 10860 70700 1 19720617 1600 8 15292000 1973 8087 52800 1 19730616 1000 57 15292000 1974 7630 33600 1 19740529 700 26 15292000 1975 10280 44000 1 19750603 1400 52 15292000 1976 8169 33300 1 19760611 900 41 15292000 1977 10110 52600 2 1500 31 15292000 1978 8194 24300 1 19780627 1600 32 15292000 1979 9490 39300 1 19790716 1200 45 15292000 1980 10720 49700 1 19800729 1400 63 15292000 1981 11960 60800 1 19810712 1500 16 15292000 1982 9668 37000 1 19820621 1300 31 15292000 1983 9924 36000 1 19830604 1500 18 15292000 1984 9578 52000 1 19840617 1800 28 15292000 1985 9880 39700 1 19850528 1600 33 15292000 1986 8531 27700 1 19860618 1300 16 15292000 1987 10550 44800 1 19870731 1500 61 15292000 1988 10220 39500 1 19880616 1500 92