Year   Concerts Seen  
2019 2 concerts
2018 2 concerts
2017 1 concert
2015 4 concerts
2014 3 concerts
2013 4 concerts
2012 1 concert
2011 4 concerts
2007 2 concerts
2006 2 concerts
2005 1 concert
2004 2 concerts
2003 1 concert
2002 2 concerts
2001 1 concert
1999 2 concerts
1998 2 concerts
1997 1 concert
1995 1 concert
1994 1 concert
1990 1 concert
1989 2 concerts
1985 1 concert
1978 6 concerts
1977 7 concerts
1976 3 concerts
1975 4 concerts