Jon Stark has seen concerts during 12 years.

Year   Concerts Seen  
2019 1 concert
2018 1 concert
2017 2 concerts
2013 1 concert
2009 1 concert
2001 1 concert
2000 1 concert
1999 1 concert
1998 4 concerts
1997 7 concerts
1996 5 concerts
1994 1 concert