Year   Concerts Seen  
2020 1 concert
2018 1 concert
2017 1 concert
2016 3 concerts
2015 2 concerts
2014 1 concert
2013 3 concerts
2012 1 concert
2011 1 concert
2010 1 concert
2009 2 concerts
2008 1 concert
2007 1 concert
2006 3 concerts
2005 4 concerts
2004 1 concert
2003 1 concert
2002 1 concert
2001 1 concert
1999 3 concerts
1998 5 concerts
1997 10 concerts
1996 1 concert
1994 4 concerts
1993 1 concert
1992 1 concert
1991 1 concert
1990 2 concerts
1989 2 concerts
1988 3 concerts
1987 3 concerts
1986 1 concert
1985 3 concerts
1984 1 concert
1983 1 concert
1981 1 concert
1980 1 concert
1978 4 concerts
1977 4 concerts
1976 3 concerts
1975 6 concerts
1974 2 concerts
1969 1 concert