Blue has seen concerts during 13 years.

Year   Concerts Seen  
2022 16 concerts
2020 1 concert
2019 8 concerts
2018 8 concerts
2017 4 concerts
2016 5 concerts
2015 2 concerts
2014 5 concerts
2013 2 concerts
2012 3 concerts
2009 2 concerts
2008 2 concerts
2002 1 concert