Ritchie Derichleau has seen concerts during 20 years.

Year   Concerts Seen  
2015 1 concert
2014 1 concert
2013 1 concert
2012 2 concerts
2010 1 concert
2009 1 concert
2008 4 concerts
2007 2 concerts
2006 1 concert
2005 4 concerts
2004 1 concert
2003 5 concerts
2002 2 concerts
2000 2 concerts
1999 2 concerts
1998 1 concert
1997 1 concert
1996 1 concert
1993 2 concerts
1992 1 concert