Mary Sheehan has seen concerts during 13 years.

Year   Concerts Seen  
2023 1 concert
2022 1 concert
2019 1 concert
2018 3 concerts
2015 1 concert
2014 2 concerts
2011 1 concert
2010 1 concert
2000 1 concert
1998 1 concert
1993 2 concerts
1992 1 concert
1990 1 concert