Formulae for calculating GDP is changed everytime...by economist..so that it reflect the real growth...it more of a weighting issues.as each economy is configured differently. But as long as IMF, WB, OECD and say EUI find the figures credible...then the rest is an intellectual debate best left to economist. Kenya has changed it formulae twice in 10yrs..Nyongo did the first change in 2005..and recently it was changed to include Real Estate...Nigeria changed theirs to include Nollywood movies
...soon we might have to include the earnings our althetes get.
I found this interesting. They have changed how they calculate their GDP. How was it different before?