Year   Concerts Seen  
2019 1 concert
2018 2 concerts
2017 2 concerts
2007 1 concert
2005 1 concert
2003 1 concert
2002 1 concert
1998 1 concert
1996 1 concert
1992 1 concert
1991 1 concert
1987 3 concerts
1986 2 concerts
1985 3 concerts
1984 3 concerts
1983 2 concerts
1982 6 concerts
1981 1 concert
1980 4 concerts
1979 1 concert