Year   Concerts Seen  
2024 1 concert
2019 2 concerts
2013 1 concert
2010 2 concerts
1996 2 concerts
1995 1 concert
1993 2 concerts
1992 1 concert
1990 2 concerts
1989 1 concert
1988 1 concert
1987 1 concert
1984 1 concert
1981 1 concert
1980 2 concerts
1979 1 concert
1978 2 concerts
1977 9 concerts
1976 8 concerts
1975 9 concerts
1974 5 concerts
1973 11 concerts
1972 1 concert
1971 2 concerts
1970 3 concerts