Year   Concerts Seen  
2020 1 concert
2019 7 concerts
2018 1 concert
2017 4 concerts
2016 5 concerts
2015 4 concerts
2014 2 concerts
2013 2 concerts
2011 5 concerts
2010 1 concert
2009 6 concerts
2008 6 concerts
2007 4 concerts
2006 4 concerts
2005 2 concerts
2003 2 concerts
2002 2 concerts
2000 1 concert
1999 2 concerts
1995 1 concert
1985 2 concerts
1984 1 concert
1983 1 concert
1982 3 concerts
1981 5 concerts
1980 9 concerts
1979 24 concerts
1978 14 concerts
1977 17 concerts
1976 1 concert