Greg Markwardt has seen concerts during 26 years.

Year   Concerts Seen  
2023 11 concerts
2022 8 concerts
2021 1 concert
2020 1 concert
2019 10 concerts
2018 1 concert
2017 2 concerts
2016 2 concerts
2015 2 concerts
2014 1 concert
2013 3 concerts
2012 2 concerts
2011 2 concerts
2010 1 concert
2009 5 concerts
2008 6 concerts
2007 3 concerts
2006 6 concerts
2005 6 concerts
2004 6 concerts
2003 7 concerts
2002 7 concerts
2001 3 concerts
2000 7 concerts
1999 4 concerts
1998 2 concerts