Year   Concerts Seen  
2010 2 concerts
2009 1 concert
2008 2 concerts
2007 1 concert
2006 2 concerts
2005 1 concert
2004 1 concert
2001 2 concerts
1999 1 concert
1997 1 concert
1995 1 concert
1992 1 concert
1989 2 concerts
1988 1 concert
1987 1 concert
1986 2 concerts
1984 2 concerts
1983 1 concert
1982 3 concerts
1981 1 concert
1980 1 concert
1979 1 concert
1978 2 concerts
1976 1 concert