data and rankings are updated annually and published in the report and on this website. The data reflect the situation as of June 1 of the respective year of publication. Data points may be revised as new information is available, which is also applied to the time series to ensure consistency of data. The links below highlight revisions made to the data in previous years. We welcome input
from governments or other users of the data. This input will be considered and if it results in changes to the data, it will be reflected in the files shown below, the respective country data pages, and in the data simulator
. Please note that rankings are updated annually.
» Changes to DB 2012 data (over 5%)
» Changes to DB 2011 data
» Changes to DB 2010 data
» Changes to DB 2009 data
» Changes to DB 2008 data