Gordon Chapman has seen concerts during 15 years.

Year   Concerts Seen  
2019 1 concert
1996 1 concert
1993 1 concert
1992 1 concert
1989 1 concert
1987 1 concert
1984 1 concert
1983 4 concerts
1982 5 concerts
1981 3 concerts
1980 3 concerts
1979 8 concerts
1978 3 concerts
1977 3 concerts
1975 1 concert