Performances Year Performances 1969 Performances 1970 Performances 1971 Performances 1972 Performances 1973 Performances 1974 Performances 1975 Performances 1976 Performances 1977 Performances 1978 Performances 1979 Performances 1980 Performances 2007 PerformancesYear Performances1969 Performances1970 Performances1971 Performances1972 Performances1973 Performances1974 Performances1975 Performances1976 Performances1977 Performances1978 Performances1979 Performances1980 Performances2007