Year   Concerts Seen  
2018 2 concerts
2015 1 concert
2013 1 concert
2011 1 concert
2009 3 concerts
2008 1 concert
2007 1 concert
2006 2 concerts
2005 1 concert
2004 1 concert
2002 1 concert
2001 3 concerts
2000 3 concerts
1998 1 concert
1996 1 concert
1994 1 concert
1992 3 concerts
1991 1 concert
1986 1 concert
1984 6 concerts
1982 2 concerts
1981 4 concerts
1980 1 concert
1979 2 concerts