Erin21 has seen concerts during 23 years.

Year   Concerts Seen  
2023 1 concert
2022 12 concerts
2021 3 concerts
2019 5 concerts
2018 3 concerts
2017 5 concerts
2016 4 concerts
2015 1 concert
2014 1 concert
2012 3 concerts
2011 4 concerts
2010 1 concert
2009 2 concerts
2007 2 concerts
2006 5 concerts
2005 3 concerts
2004 3 concerts
2003 3 concerts
2002 2 concerts
2001 3 concerts
2000 14 concerts
1999 1 concert
1994 1 concert