Greg Wallis has seen concerts during 37 years.

Year   Concerts Seen  
2005 2 concerts
2003 1 concert
2001 1 concert
2000 1 concert
1999 7 concerts
1998 21 concerts
1997 28 concerts
1996 13 concerts
1995 25 concerts
1994 20 concerts
1993 11 concerts
1992 6 concerts
1991 10 concerts
1990 13 concerts
1989 22 concerts
1988 25 concerts
1987 16 concerts
1986 9 concerts
1985 10 concerts
1984 15 concerts
1983 7 concerts
1982 3 concerts
1981 5 concerts
1980 2 concerts
1979 5 concerts
1978 15 concerts
1977 7 concerts
1976 6 concerts
1975 6 concerts
1974 11 concerts
1973 11 concerts
1972 17 concerts
1971 5 concerts
1970 27 concerts
1969 38 concerts
1968 1 concert
1966 1 concert