Eric S. Hoffman has seen concerts during 11 years.

Year   Concerts Seen  
2020 1 concert
2019 42 concerts
2018 7 concerts
2017 1 concert
2016 5 concerts
2015 1 concert
2014 1 concert
2013 1 concert
2012 3 concerts
2010 2 concerts
2009 1 concert