A "... 1.5 billion ..." (line 2) refers to more than 25% of the world population who survive without access to electricity.
B "... 80 per cent ..." (line 4) refers to the share of the total world population living in the least developed countries.
C "1.2 billion ..." (line 12) refers to the amount of global population that will certainly live without electricity in 2015.
D "... 99 per cent ..." (lines 18-19) refers to the percentage of deaths resulting from smoking cigarettes in developing countries.
E "... 38 per cent ..." (line 24) refers to the amount of adults who die of lung disease in the sub-Saharan Africa.