Year   Concerts Seen  
2019 2 concerts
2015 1 concert
2014 3 concerts
2013 2 concerts
2012 1 concert
2011 2 concerts
2010 2 concerts
2009 3 concerts
2007 2 concerts
2006 1 concert
2005 1 concert
2002 1 concert
2001 1 concert
2000 3 concerts
1981 1 concert
1980 3 concerts
1979 1 concert
1976 4 concerts
1975 1 concert