Jason Jeffrey has seen concerts during 15 years.

Year   Concerts Seen  
2022 1 concert
2021 8 concerts
2020 2 concerts
2019 16 concerts
2018 19 concerts
2017 10 concerts
2016 9 concerts
2015 8 concerts
2014 4 concerts
2013 6 concerts
2012 2 concerts
2011 2 concerts
2010 3 concerts
2009 1 concert
2008 2 concerts