John Cotter has seen concerts during 14 years.

Year   Concerts Seen  
2024 3 concerts
2023 16 concerts
2022 10 concerts
2021 3 concerts
2020 1 concert
2017 3 concerts
2014 1 concert
2009 1 concert
2007 1 concert
2001 1 concert
1995 1 concert
1994 1 concert
1990 1 concert
1989 1 concert