The Business Bribery Index (BBI) was developed using data collected in surveying the actual bribe paid by business managers to the governments worldwide. It offers an estimation of national annual bribes paid by the business sector to governments, in each country worldwide, in the currency of that country at the time, and the equivalent amount in US dollars. The data is available for 127 countries mostly in the developing world.
The BBI utilizes estimation and corruption surveys carried out by the World Bank Business Environment and Enterprise Performance Survey (BEEPS) and the World Bank Enterprise Survey (WBES). A number of data sources have also been used to validate the BBI data as a means of ensuring its quality.
Please visit BBI on University of Toronto's Quantitative Ethics initiative here.