Hans Keijzers has seen concerts during 39 years.

Year   Concerts Seen  
2023 1 concert
2022 8 concerts
2021 1 concert
2020 1 concert
2019 6 concerts
2018 16 concerts
2017 10 concerts
2016 5 concerts
2015 4 concerts
2014 2 concerts
2012 3 concerts
2011 8 concerts
2010 10 concerts
2009 10 concerts
2008 20 concerts
2007 27 concerts
2006 21 concerts
2005 27 concerts
2004 21 concerts
2003 28 concerts
2002 29 concerts
2001 51 concerts
2000 45 concerts
1999 33 concerts
1998 10 concerts
1997 11 concerts
1996 16 concerts
1995 27 concerts
1994 31 concerts
1993 29 concerts
1992 25 concerts
1991 22 concerts
1990 9 concerts
1989 2 concerts
1988 2 concerts
1987 1 concert
1984 5 concerts
1983 4 concerts
1982 3 concerts