Mark Köster has seen concerts during 25 years.

Year   Concerts Seen  
2024 3 concerts
2022 4 concerts
2020 1 concert
2019 9 concerts
2018 4 concerts
2017 7 concerts
2016 5 concerts
2015 5 concerts
2014 2 concerts
2013 4 concerts
2012 5 concerts
2011 5 concerts
2010 3 concerts
2009 1 concert
2007 1 concert
2006 2 concerts
2005 3 concerts
2004 4 concerts
2003 2 concerts
2002 1 concert
2001 1 concert
2000 2 concerts
1999 2 concerts
1998 3 concerts
1997 2 concerts