Year   Concerts Seen  
2023 3 concerts
2022 4 concerts
2013 1 concert
2012 1 concert
2011 2 concerts
2010 2 concerts
2009 1 concert
2008 2 concerts
2007 3 concerts
2006 5 concerts
2005 2 concerts
2004 4 concerts
2003 4 concerts
2002 7 concerts
2001 1 concert
2000 1 concert
1999 8 concerts
1998 9 concerts
1997 6 concerts
1996 4 concerts
1995 5 concerts
1994 4 concerts
1993 2 concerts
1992 1 concert
1991 6 concerts
1990 1 concert
1988 5 concerts
1987 3 concerts
1985 1 concert
1982 1 concert
1981 2 concerts
1979 7 concerts
1975 7 concerts
1974 2 concerts
1973 3 concerts
1972 6 concerts
1970 2 concerts