The Tokyo Stock Exchange's Nikkei index closed at a rise of almost 3.5%.The Tokyo Stock Exchange's Nikkei index closed at a rise of almost 3.5%.The Tokyo Stock Exchange's Nikkei index closed at a rise of almost 3.5%.The Tokyo Stock Exchange's Nikkei index closed at a rise of almost 3.5%.The Tokyo Stock Exchange's Nikkei index closed at a rise of almost 3.5%.Nikkei index of the Tokyo stock exchange closes with an increase of almost 3.5%