(another crazy) Maybe would be possible to look at the fact that the figures in recent years appear somewhat more. Probably, one possible reason is - who seeks finds, and in the days when circles were not searched in the fields, ie, before 1970, could not even be found at all. The idea of as it looked English crop fields in the 70th years, as before, and what they look like today. Visually, probably not too indistinguishable, except for one little thing.
(Mwingine mambo) Labda Je Kuwa Inawezekana kuangalia FACT Kwamba takwimu katika miaka ya hivi karibuni INAVYOONEKANA kiasi fulani zaidi. Pengine, sababu moja Unawezekana - atafutaye hupata, na katika siku Wakati duru walikuwa si searched katika mashamba, yaani, kabla ya 1970, hakuweza hata kupatikana wakati wote. wazo la Kiingereza kama inaonekana mashamba ya mazao katika miaka 70, kama kabla, na kile Wao kuangalia kama leo. Kuibua, pengine si pia indistinguishably, ila kwa jambo moja kidogo.