David Janitz has seen concerts during 20 years.

Year   Concerts Seen  
2013 2 concerts
2011 1 concert
2010 4 concerts
2008 1 concert
2004 1 concert
2003 6 concerts
2002 4 concerts
2000 1 concert
1999 2 concerts
1997 1 concert
1996 1 concert
1993 1 concert
1992 3 concerts
1990 1 concert
1988 2 concerts
1987 3 concerts
1986 3 concerts
1985 4 concerts
1984 1 concert
1983 1 concert