From the 1960s to the 1980s..., there has been a fivefold increase in the frequency of great natural disasters, and a threefold increase in total economic losses. ”
Alates 1960 - ndatest kuni 1980 - ndateni... on suurte loodusõnnetuste sagedus kasvanud viis korda ja totaalse majandusliku kahju ulatus kolm korda. ”