Before clarifying "first use" of GNP and GDP, it must be stated that  
one did not "give way" to the other, as they express different things,  
and the difference is residence and territory.
	GDP is the whole amount of aggregated value within a certain  
territory -- let's say the USA -- that is including those factors of  
production pertaining to foreign residents (so allowing a certain  
amount of payment abroad).
	GNP, instead is the whole amount of aggregate value "produced" by  
American residents, either in the territory of the USA or abroad, so  
permitting the inflow of payments for US factors of production located  
abroad.
	In the case of the USA, as residents have much more investments  
abroad, than foreigners have investments in the USA, normally GNP  
should be higher than GDP. Developing countries, instead have GDPs  
higher than their respective GNPs.
	Someone correct me, if I'm wrong...

Paulo Roberto de Almeida