id	keyword
economy-6524	tourism
economy-6524	hunan
economy-6524	development
economy-6524	industry
economy-6524	growth
economy-6524	factor
economy-6524	table
economy-6524	research
economy-6524	journal
economy-6524	analysis
economy-6524	data
economy-6524	economy
economy-6524	province
economy-6524	tourism industry
economy-6524	study
economy-6524	online
economy-6524	china
economy-6524	income
economy-6524	variables
economy-6524	sector