Christiaan Roos has seen concerts during 13 years.

Year   Concerts Seen  
2022 1 concert
2019 1 concert
2018 1 concert
2016 2 concerts
2015 1 concert
2014 2 concerts
2013 2 concerts
2012 3 concerts
2008 1 concert
2000 1 concert
1998 2 concerts
1997 2 concerts
1995 1 concert