Peter Nieuwkoop has seen concerts during 44 years.

Year   Concerts Seen  
2023 4 concerts
2022 6 concerts
2020 1 concert
2019 3 concerts
2018 7 concerts
2017 4 concerts
2016 4 concerts
2015 7 concerts
2014 3 concerts
2013 3 concerts
2012 5 concerts
2011 4 concerts
2010 4 concerts
2009 6 concerts
2008 4 concerts
2007 4 concerts
2006 1 concert
2005 3 concerts
2004 3 concerts
2003 4 concerts
2002 2 concerts
2001 3 concerts
2000 1 concert
1999 1 concert
1995 4 concerts
1994 4 concerts
1993 6 concerts
1992 1 concert
1991 1 concert
1990 2 concerts
1989 2 concerts
1988 2 concerts
1987 5 concerts
1986 7 concerts
1985 6 concerts
1984 9 concerts
1983 7 concerts
1982 4 concerts
1981 4 concerts
1980 5 concerts
1979 9 concerts
1978 2 concerts
1977 1 concert
1976 1 concert