Matthew Hansen has seen concerts during 12 years.

Year   Concerts Seen  
2017 1 concert
2016 3 concerts
2015 1 concert
2010 1 concert
1999 1 concert
1995 1 concert
1992 1 concert
1990 1 concert
1988 3 concerts
1986 3 concerts
1985 4 concerts
1984 2 concerts