Jonathan Vernon has seen concerts during 14 years.

Year   Concerts Seen  
2022 1 concert
2019 3 concerts
2016 1 concert
2014 1 concert
2011 3 concerts
2009 2 concerts
2008 1 concert
2007 1 concert
2006 1 concert
2003 2 concerts
2002 2 concerts
2001 2 concerts
2000 1 concert
1999 1 concert