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However , the real demand cycle may depend on China , an economic system that accounts only for approximately 5 % of the world 's GDP , but whose increased consumption of oil and key metals accounted for fully 50 % of total global growth last year .
 China, approximately 5 %, 50 %, last year
Please list all entity words in the text that fit the category. Output format is "word1, word2". 
Option: date, organization, person, geographical social political, national religious political, facility, cardinal, location, work of art, law, event, product, ordinal, percent, time, quantity, money, language 
Text: {0} 
Answer:
 China, approximately 5 %, 50 %, last year