Mark Harmon has seen concerts during 15 years.

Year   Concerts Seen  
2023 7 concerts
2022 8 concerts
2020 1 concert
2019 4 concerts
2018 1 concert
2015 1 concert
2014 2 concerts
2013 1 concert
2012 3 concerts
2011 3 concerts
2010 1 concert
2009 2 concerts
2008 2 concerts
2006 1 concert
2005 1 concert