Year   Concerts Seen  
2019 1 concert
2018 1 concert
2015 1 concert
2012 1 concert
2007 1 concert
2006 1 concert
2005 3 concerts
2004 1 concert
2003 1 concert
2002 2 concerts
1999 2 concerts
1998 7 concerts
1997 3 concerts
1996 5 concerts
1995 1 concert
1994 1 concert
1993 5 concerts
1992 2 concerts
1991 4 concerts
1990 5 concerts
1988 1 concert
1987 3 concerts
1986 4 concerts
1985 2 concerts
1984 2 concerts
1983 1 concert
1982 8 concerts
1981 3 concerts
1980 5 concerts
1979 5 concerts
1978 3 concerts
1977 4 concerts
1976 15 concerts
1975 3 concerts
1974 2 concerts
1971 1 concert