Jhansen has seen concerts during 12 years.

Year   Concerts Seen  
1991 2 concerts
1990 3 concerts
1989 1 concert
1988 2 concerts
1987 6 concerts
1986 4 concerts
1985 7 concerts
1984 13 concerts
1983 8 concerts
1982 3 concerts
1981 7 concerts
1980 1 concert