Ruben Ab has seen concerts during 14 years.

Year   Concerts Seen  
2019 1 concert
2016 1 concert
2011 1 concert
2010 1 concert
2009 1 concert
2006 2 concerts
2002 1 concert
2001 1 concert
2000 2 concerts
1999 1 concert
1998 1 concert
1994 1 concert
1993 1 concert
1992 1 concert