Andrew Gardner has seen concerts during 20 years.

Year   Concerts Seen  
2019 2 concerts
2018 1 concert
2017 3 concerts
2016 1 concert
2015 1 concert
2014 2 concerts
2013 1 concert
2012 1 concert
2011 1 concert
2010 3 concerts
2009 11 concerts
2008 4 concerts
2007 5 concerts
2006 6 concerts
2005 11 concerts
2004 7 concerts
2003 5 concerts
2002 5 concerts
2000 1 concert
1997 1 concert