Jammers has seen concerts during 20 years.

Year   Concerts Seen  
2022 3 concerts
2018 1 concert
2017 1 concert
2016 4 concerts
2015 3 concerts
2014 1 concert
2013 12 concerts
2012 12 concerts
2011 5 concerts
2010 7 concerts
2009 9 concerts
2008 4 concerts
2007 3 concerts
2006 8 concerts
2005 5 concerts
2004 3 concerts
2003 1 concert
2001 1 concert
2000 1 concert
1999 1 concert