I want to know the answer to the following question:
According to surveys in 2007 and 2009, what percent of the population believes in cults of ancestors?
All the background I'm provided with is that "The reports didn't give figures for other types of religion; 74.36% of the population may be either irreligious or involved in worship of nature deities, Buddhism, Confucianism, Taoism, folk religious sects, and small minorities of Muslims.". Is that enough to answer the question?
Answer: no