id	keyword
fbem-5449	service industry
fbem-5449	efficiency
fbem-5449	green
fbem-5449	efficiency level
fbem-5449	china
fbem-5449	regions
fbem-5449	provinces
fbem-5449	productivity
fbem-5449	differences
fbem-5449	output
fbem-5449	𝐺 𝐺
fbem-5449	development
fbem-5449	gini
fbem-5449	environmental