- 日本「汚職指数」1ランク改善の17位(日刊スポーツ)
http://www.nikkansports.com/general/news/f-gn-tp1-20091117-566917.html - Corruption Perceptions Index 2009 (Transparency International)
http://www.transparency.org/policy_research/surveys_indices/cpi/2009
http://www.transparency.org/policy_research/surveys_indices/cpi/2009/cpi_2009_table