Keith Mackie has seen concerts during 13 years.

Year   Concerts Seen  
2006 1 concert
2005 1 concert
2000 4 concerts
1998 1 concert
1997 5 concerts
1996 3 concerts
1995 1 concert
1994 2 concerts
1993 2 concerts
1990 1 concert
1989 1 concert
1988 2 concerts
1987 1 concert