Year   Concerts Seen  
2021 1 concert
2019 2 concerts
2018 4 concerts
2017 1 concert
2016 1 concert
2015 3 concerts
2014 1 concert
2010 3 concerts
2009 1 concert
2008 2 concerts
2007 4 concerts
2006 2 concerts
2005 1 concert
2004 2 concerts
2003 1 concert
2002 1 concert
2001 4 concerts
2000 2 concerts
1999 2 concerts
1998 2 concerts
1996 2 concerts
1995 1 concert
1994 3 concerts
1993 1 concert
1992 5 concerts
1990 1 concert
1989 3 concerts
1988 4 concerts
1987 6 concerts