make detail:

According to Colin Andrews's data base, Crop Circle appeared in UK from 1936 to 1940 as simple circle.
Until 1963, not many Crop Circles appeared in all over the world.
From 1966 to 1977, about 30 simple circle Crop Circles were reported from Australia. More than UK at the time.
Until 1983, few Crop Circles were reported in UK, and they were simple circle.
In 1983-1985, Colin Andrews started to investigate Crop Circle from his home town in UK.
From 1984 to 1986, Crop Circle numbers went to about 10each year in UK, but they were in simple circle shape.
From 1987 to 1989, number wetnt to50 for each year, and the shape changed tocomplex from simple.
From 1990 to 1994, number went to morethan 100 each year, and got more complex in shape.
From 1995 to 1997, Crop Circle shape has changed very complex and number went to 50 to 100 for each year.

Colin Andrews: Circles Phenomenon Research International
P.O.Box 3378, Branford, CT 06405-1978. Tel/Fax: (203)483-0822

URL page by Masahiro Kahata,  Psychic Lab, Inc.

PMB 88.511 Avenue of the Americas, New York, NY 10011-8436, USA, 212-656-1079 (voice & fax)

Picture ICON by Didier Cremieux, based on Colin Andrews data base.

T number by Colin Andrews, 1976 to 1994.

Sort by shape is Masahiro, in process.