Nils Wortmann has seen concerts during 28 years.

Year   Concerts Seen  
2019 5 concerts
2018 4 concerts
2017 4 concerts
2016 6 concerts
2015 5 concerts
2014 3 concerts
2013 12 concerts
2012 17 concerts
2011 16 concerts
2010 14 concerts
2009 15 concerts
2008 15 concerts
2007 17 concerts
2006 6 concerts
2005 1 concert
2004 4 concerts
2003 3 concerts
2002 3 concerts
2001 9 concerts
2000 7 concerts
1999 1 concert
1998 3 concerts
1997 2 concerts
1996 3 concerts
1995 3 concerts
1994 9 concerts
1993 2 concerts
1992 1 concert