Ton has seen concerts during 42 years.

Year   Concerts Seen  
2023 1 concert
2022 3 concerts
2020 1 concert
2019 3 concerts
2018 2 concerts
2017 1 concert
2016 1 concert
2015 2 concerts
2013 4 concerts
2012 1 concert
2011 4 concerts
2010 1 concert
2009 1 concert
2008 2 concerts
2007 5 concerts
2006 5 concerts
2005 2 concerts
2004 1 concert
2003 2 concerts
2002 3 concerts
2001 2 concerts
2000 3 concerts
1999 1 concert
1998 3 concerts
1997 2 concerts
1996 2 concerts
1995 4 concerts
1994 3 concerts
1993 3 concerts
1992 4 concerts
1991 4 concerts
1990 2 concerts
1987 1 concert
1985 2 concerts
1984 4 concerts
1983 2 concerts
1982 1 concert
1981 4 concerts
1980 1 concert
1979 3 concerts
1978 1 concert
1977 1 concert