Koji Matsui is a Japanese politician of the Democratic Party of Japan, a member of the House of Councillors in the Diet (national legislature). A native of Kyoto, Kyoto and graduate of the University of Tokyo, he joined the Ministry of International Trade and Industry, receiving a master's degree fr— Wikipedia
The time period for further statistics is the same as in the graph above. Retweets are included. For the word cloud, the most common words in a language and numbers were eliminated, and words were converted to lowercase.