Year   Concerts Seen  
2020 1 concert
2019 6 concerts
2018 5 concerts
2017 4 concerts
2016 2 concerts
2015 2 concerts
2014 2 concerts
2013 2 concerts
2012 4 concerts
2011 1 concert
2010 6 concerts
2009 3 concerts
2008 3 concerts
2006 5 concerts
2005 1 concert
2004 3 concerts
2003 2 concerts
2002 1 concert
2001 2 concerts
2000 2 concerts
1999 1 concert
1998 1 concert
1997 3 concerts
1994 1 concert
1993 3 concerts
1991 1 concert
1982 1 concert
1981 2 concerts
1980 2 concerts
1979 4 concerts
1978 2 concerts
1977 2 concerts