Jmdiff has seen concerts during 39 years.

Year   Concerts Seen  
2023 4 concerts
2022 5 concerts
2019 1 concert
2018 1 concert
2015 1 concert
2013 2 concerts
2012 2 concerts
2011 3 concerts
2010 2 concerts
2009 4 concerts
2008 3 concerts
2007 3 concerts
2006 1 concert
2005 6 concerts
2004 2 concerts
2003 2 concerts
2002 2 concerts
2001 2 concerts
2000 2 concerts
1999 2 concerts
1998 1 concert
1997 1 concert
1996 1 concert
1993 1 concert
1989 2 concerts
1988 4 concerts
1987 2 concerts
1986 1 concert
1985 1 concert
1984 5 concerts
1983 3 concerts
1982 2 concerts
1981 7 concerts
1980 2 concerts
1979 3 concerts
1978 5 concerts
1977 4 concerts
1976 4 concerts
1975 1 concert