Dan Martz has seen concerts during 14 years.

Year   Concerts Seen  
2022 2 concerts
2019 1 concert
2016 5 concerts
2015 1 concert
2014 1 concert
2013 3 concerts
2012 3 concerts
2010 1 concert
2009 2 concerts
2008 2 concerts
2007 5 concerts
2006 2 concerts
2005 1 concert
2004 1 concert