Year   Concerts Seen  
2019 3 concerts
2017 2 concerts
2016 3 concerts
2007 3 concerts
2006 4 concerts
2005 2 concerts
2004 2 concerts
2002 5 concerts
2001 5 concerts
2000 6 concerts
1999 1 concert
1998 6 concerts
1997 2 concerts
1996 2 concerts
1995 1 concert
1994 1 concert
1993 1 concert
1991 1 concert
1990 1 concert