Annual report 2019 (only in German)
Annual report 2018 (only in German)
Annual report 2017 (only in German)
Annual report 2016 (only in German)
Annual report 2015 (only in German)
Annual report 2014 (only in German)
Annual report 2013 (only in German)
Annual report 2012 (only in German)
Annual report 2011 (only in German)