id	keyword
ajoaa-559	energy
ajoaa-559	efficiency
ajoaa-559	technical
ajoaa-559	apple
ajoaa-559	analysis
ajoaa-559	inputs
ajoaa-559	use
ajoaa-559	production
ajoaa-559	output
ajoaa-559	total
ajoaa-559	dea
ajoaa-559	scale
ajoaa-559	data
ajoaa-559	dmus