Transparency International e.V. (TI) is a German registered association founded in 1993 by former employees of the World Bank. Based in Berlin, its nonprofit and non-governmental purpose is to take action to combat global corruption with civil societal anti-corruption measures and to prevent criminal activities arising from corruption. Its most notable publications include the Global Corruption Barometer and the Corruption Perceptions Index. TI serves as an umbrella organization. Since 1993 to the present day, its membership has grown from a few individuals to more than 100 national chapters, which engage in fighting perceived corruption in their home countries. TI is a member of G20 Think Tanks (T20) as well as Civil Society 20, UNESCO, United Nations Global Compact, Sustainable Development Solutions Network and shares the goals of peace, justice, strong institutions and partnerships of the United Nations Sustainable Development Group (UNSDG). TI is a social partner of Global Alliance in Management Education. TI confirmed the dis-accreditation of the national chapter of United States in 2017 and a new TI USA chapter was established in 2020. According to the 2014 Global Go To Think Tank Index report, TI was number 9 of 100 in the Top Think Tanks Worldwide (non-US) category and number 27 of 150 in the Top Think Tanks Worldwide category.