This means that on average, every year for the next 50 years, the world population will grow by about the numberof people that live now in Italy, and total population growth over the next 50 years will be more than twice the size of the current population in China.
The numberof white children declined, due in part to age: The white population is older on average, so more whites are dying, and fewer are in their prime child-bearing years.
You might think, then, that if we looked at the averagenumberof hours worked by all those of working age - dividing the total numberof hours worked by the working age population - Germany would come out on top.