1979,1979,1979,1980,1980,1981,1982,1982,1983,1984,1986,1986,1988,1989,1990,1990,1989,1987,1987,1985,1985,1984,1984,1983,1981,1980;853,851,850,850,848,848,847,846,846,845,845,843,844,844,845,847,847,848,849,850,851,852,853,854,854,853