Trevor Butler has seen concerts during 15 years.

Year   Concerts Seen  
2023 7 concerts
2022 5 concerts
2008 3 concerts
2006 1 concert
2005 2 concerts
2004 1 concert
2003 1 concert
2001 1 concert
2000 4 concerts
1999 1 concert
1998 2 concerts
1997 2 concerts
1996 6 concerts
1995 4 concerts
1994 2 concerts