11283500 1960     125    1020   1 19600208    6.60   2         
11283500 1961    65.1     392   1 19610404    3.50   2         
11283500 1962     224    1830   1 19620209    4.60   1 19611008
11283500 1963     279    9980   1 19630201    9.70   1 19621003
11283500 1964     134    1200   1 19631115    7.90   1 19640928
11283500 1965     391    8580   1 19641223    7.50   1 19641005
11283500 1966     165    1130   1 19651118    7.70   4         
11283500 1967     434    3590   1 19661206    8.10   1 19661001
11283500 1968     126     888   1 19680220    6.00   2         
11283500 1969     549    6780   1 19690121    6.50   1 19681001
11283500 1970     288    4660   1 19700116    13.0   4         
11283500 1971     237    1880   1 19710326    12.0  10         
11283500 1972     167     651   1 19720309    7.10   2         
11283500 1973     287    1700   1 19730517    8.00   2         
11283500 1974     323    1820   1 19731112    11.0  11         
11283500 1975     314    2200   1 19750518    11.0   1 19741001
11283500 1976    76.9     494   1 19751027    5.60   1 19760813
11283500 1977    31.0     197   1 19770524    1.20   3         
11283500 1978     413    2630   1 19780425    2.40   3         
11283500 1979     278    1650   1 19790427    13.0   3         
11283500 1980     478    9870   1 19800113    16.0   8         
11283500 1981     116     769   1 19810424    6.00   8         
11283500 1982     606   12000   1 19820216    7.70   1 19811002
11283500 1983     771    4400   1 19821222    33.0   1 19821020
11283500 1987    68.7     524   1 19870213    4.30   2         
11283500 1988    82.0     400   1 19880426    2.60   4