Year   Concerts Seen  
2019 1 concert
2018 3 concerts
2017 2 concerts
2015 6 concerts
2014 1 concert
2013 1 concert
2011 1 concert
2010 5 concerts
2009 2 concerts
2008 1 concert
2007 5 concerts
2006 8 concerts
2005 3 concerts
2004 4 concerts
2003 5 concerts
2002 8 concerts
2001 5 concerts
2000 1 concert
1993 1 concert
1986 2 concerts
1985 4 concerts
1984 2 concerts
1983 2 concerts
1982 5 concerts
1981 5 concerts
1980 5 concerts
1979 6 concerts
1978 9 concerts
1977 12 concerts
1976 3 concerts
1974 1 concert