1969 -0.073 +0.014 -0.049
1970 -0.074 +0.015 -0.048
1970 -0.064 +0.011 -0.045
1975 -0.069 +0.009 -0.052
1980 -0.089 +0.018 -0.057
1980 -0.094 +0.015 -0.068
1982 -0.098 +0.018 -0.067
1982 -0.117 +0.027 -0.072
1982 -0.098 +0.018 -0.067
1982 -0.128 +0.027 -0.082
1985 -0.116 +0.030 -0.064
1987 -0.160 +0.047 -0.079
1987 -0.159 +0.048 -0.077