1965 5 concerts 1966 108 concerts 1967 131 concerts 1968 120 concerts 1969 134 concerts 1970 139 concerts 1971 83 concerts 1972 87 concerts 1973 78 concerts 1974 41 concerts 1975 5 concerts 1976 41 concerts 1977 63 concerts 1978 83 concerts 1979 75 concerts 1980 88 concerts 1981 86 concerts 1982 61 concerts 1983 66 concerts 1984 64 concerts 1985 71 concerts 1986 46 concerts 1987 85 concerts 1988 81 concerts 1989 74 concerts 1990 74 concerts 1991 79 concerts 1992 55 concerts 1993 82 concerts 1994 84 concerts 1995 47 concerts