Ken Christianson has seen concerts during 18 years.

Year   Concerts Seen  
2000 1 concert
1999 3 concerts
1998 1 concert
1997 2 concerts
1995 1 concert
1994 1 concert
1993 4 concerts
1991 1 concert
1990 2 concerts
1989 1 concert
1988 3 concerts
1986 1 concert
1983 2 concerts
1982 2 concerts
1981 3 concerts
1980 2 concerts
1979 1 concert
1977 1 concert