Year   Concerts Seen  
2009 1 concert
2008 1 concert
2007 1 concert
2005 1 concert
2004 1 concert
2002 2 concerts
1991 1 concert
1983 2 concerts
1982 3 concerts
1981 1 concert
1980 10 concerts
1979 3 concerts
1978 6 concerts
1977 3 concerts
1976 2 concerts