Year   Concerts Seen  
2016 1 concert
2015 1 concert
2010 1 concert
2006 1 concert
2002 1 concert
2001 1 concert
1999 1 concert
1998 2 concerts
1990 1 concert
1988 1 concert
1984 1 concert
1983 2 concerts
1982 5 concerts
1978 1 concert
1977 4 concerts
1976 2 concerts
1975 1 concert