Re: Everything is NOT Zia’s fault – here are 6 reasons why
Sorry, did not answered earlier (did not noticed what you asked) so here it is:
You are right that change in measurement methodology can change growth rate figures … but the effect on growth rate figures are very nominal. Reason is that, any change in measurement methodology with respect to whole economy is very nominal.
For instance … at time of changing base year, government may include certain sectors of economy in calculation because they were insignificant in past but have developed and became significant in the country. At the same time Government may expunge certain sectors of economy that became irrelevant.
That is the reason, governments should ideally re-base economy every 5 years or 10 years (at most) … and all prudent governments do.
As for your second part, regarding ratio, here it is:
Real Per capita income growth rate = (Real GDP growth rate) / (population growth rate)