Year   Concerts Seen  
2019 1 concert
2018 2 concerts
2017 1 concert
2016 1 concert
2014 4 concerts
2013 4 concerts
2012 3 concerts
2011 4 concerts
2010 4 concerts
2009 1 concert
2008 5 concerts
2007 1 concert
2006 4 concerts
2005 4 concerts
2004 1 concert
2003 6 concerts
2002 3 concerts
2001 1 concert
2000 2 concerts
1994 1 concert
1993 2 concerts
1992 2 concerts
1990 2 concerts
1989 4 concerts
1988 1 concert
1985 1 concert
1984 4 concerts
1983 2 concerts
1982 1 concert
1981 1 concert
1979 2 concerts
1978 1 concert
1977 3 concerts
1976 1 concert
1975 1 concert
1973 7 concerts
1972 5 concerts
1971 7 concerts
1970 2 concerts
1969 1 concert
1966 3 concerts
1964 1 concert