Year   Concerts Seen  
2018 2 concerts
2017 1 concert
2016 2 concerts
2015 2 concerts
2014 1 concert
2013 3 concerts
2012 1 concert
2010 3 concerts
2009 2 concerts
2008 1 concert
2007 2 concerts
2006 3 concerts
2005 3 concerts
2004 2 concerts
1998 1 concert
1994 1 concert
1993 2 concerts
1992 1 concert
1991 1 concert
1990 3 concerts
1989 2 concerts
1988 1 concert
1987 1 concert
1983 1 concert
1982 2 concerts
1977 1 concert
1975 6 concerts
1974 2 concerts
1973 1 concert
1972 2 concerts
1971 2 concerts
1970 3 concerts
1969 1 concert