7807
The year before last the mainland announced a new tax system , under which raw materials imported by foreign firms would be taxed at a rate of 17 % , with 9 % being returned to the manufacturer when finished goods were exported .
 date: The year before last; percent: 17 %; percent: 9 %
Please list all entity words in the text that fit the category.Output format is "type1: word1; type2: 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:
 date: The year before last; percent: 17 %; percent: 9 %