Year   Concerts Seen  
2021 1 concert
2019 1 concert
2017 1 concert
2013 1 concert
2012 1 concert
2011 2 concerts
2010 1 concert
2009 1 concert
2008 1 concert
2006 1 concert
2004 4 concerts
2003 4 concerts
2000 4 concerts
1999 2 concerts
1998 2 concerts
1997 10 concerts
1996 2 concerts
1995 7 concerts
1994 2 concerts
1993 9 concerts
1991 1 concert
1990 1 concert
1989 1 concert
1988 1 concert
1987 1 concert
1986 2 concerts
1985 1 concert
1984 9 concerts
1983 4 concerts
1982 1 concert
1981 2 concerts
1980 5 concerts
1979 1 concert
1978 1 concert
1977 1 concert