Bob De Boer has seen concerts during 49 years.

Year   Concerts Seen  
2024 1 concert
2023 20 concerts
2022 19 concerts
2021 4 concerts
2020 1 concert
2019 6 concerts
2018 13 concerts
2017 10 concerts
2016 15 concerts
2015 10 concerts
2014 14 concerts
2013 6 concerts
2012 3 concerts
2011 3 concerts
2010 5 concerts
2009 4 concerts
2008 6 concerts
2007 3 concerts
2006 7 concerts
2005 7 concerts
2004 13 concerts
2003 10 concerts
2002 14 concerts
2001 12 concerts
2000 10 concerts
1999 2 concerts
1998 1 concert
1997 2 concerts
1994 1 concert
1993 3 concerts
1992 5 concerts
1991 4 concerts
1990 5 concerts
1989 5 concerts
1988 7 concerts
1987 10 concerts
1986 3 concerts
1985 10 concerts
1984 13 concerts
1983 16 concerts
1982 23 concerts
1981 14 concerts
1980 4 concerts
1979 3 concerts
1978 4 concerts
1977 6 concerts
1976 2 concerts
1975 1 concert
1974 1 concert