And that's what I'm going to show you, because since 1960 what has happened in the world up to 2010 is that a staggering four billion people have been added to the world population.
Seda ma teile näitangi. Kuna 1960. aastast 2010. aastani on maailma rahvaarv üllatavalt palju – nelja miljardi inimese võrra – suurenenud.