Chris Callahan has seen concerts during 37 years.

Year   Concerts Seen  
2023 3 concerts
2022 3 concerts
2021 1 concert
2019 2 concerts
2018 3 concerts
2017 7 concerts
2016 9 concerts
2015 10 concerts
2014 10 concerts
2013 10 concerts
2012 18 concerts
2011 5 concerts
2010 9 concerts
2009 9 concerts
2008 8 concerts
2007 4 concerts
2006 9 concerts
2005 5 concerts
2004 1 concert
2003 2 concerts
2002 4 concerts
2001 2 concerts
2000 2 concerts
1999 2 concerts
1998 3 concerts
1996 1 concert
1988 1 concert
1987 1 concert
1982 2 concerts
1981 3 concerts
1980 3 concerts
1979 3 concerts
1978 1 concert
1977 6 concerts
1976 6 concerts
1975 6 concerts
1974 1 concert