In 2005, in order to host The 10th National Game of People's Republic of China, there was a new stadium, Nanjing Olympic Sports Center, constructed in Nanjing. Compared to Wutaishan Sports Center, which the major stadium's capacity is 18,500, Nanjing Olympic Sports Center has a more advanced stadium which is big enough to seat 60,000 spectators. Its gymnasium has capacity of 13,000, and natatorium of capacity 3,000.
Is there an answer to this question (If it cannot be answered, say "unanswerable"): When was the Nanjing Olympic Sports Center built?
2005