Note what is said in the New Scientist article quoted above. “ There were 523 disasters reported in the 1960s and 767 in the 1970s. By the 1980s, the number had reached 1387. ”
Pane tähele, mida öeldakse ajakirja New Scientist eelmainitud artiklis. „1960 - ndatel aastatel teatati 523 õnnetusest ja 1970 - ndatel 767 õnnetusest. 1980 - ndatel aastatel ulatus see arv 1387 - ni. ”