Year   Concerts Seen  
2019 2 concerts
2018 1 concert
2016 2 concerts
2015 1 concert
2014 1 concert
2012 1 concert
2009 1 concert
2008 1 concert
2002 2 concerts
2001 1 concert
2000 1 concert
1999 1 concert
1995 1 concert
1994 1 concert
1993 2 concerts
1992 2 concerts
1990 1 concert
1989 2 concerts
1988 1 concert
1986 1 concert
1985 1 concert
1984 1 concert
1983 1 concert
1981 3 concerts
1980 1 concert
1977 2 concerts
1974 1 concert
1971 1 concert
1969 1 concert
1968 1 concert
1966 1 concert
1962 1 concert
1961 1 concert
1960 2 concerts