Further information on the numbers of laboratory animals are available on the German website Tierversuche-verstehen.de which is offered by an alliance of German scientific organizations:

Tierversuche verstehen. Eine Informationsinitiative der Wissenschaft. (2020, March 26). Tierversuche in den Bundesländern: Fact Sheet-Sammlung. https://www.tierversuche-verstehen.de/tierversuche-in-den-bundeslaendern-fact-sheet-sammlung/ Tierversuche-verstehen.de 

Due to the modified registration system concomitant with the coming into force of Directive 2010/63/EU, the data after 2014 are not comparable to the data of the previous years. A general overview of the numbers of laboratory animals 2009–2013 is provided by the Federal Ministry of Food and Agriculture (BMEL):

Bundesministerium Landwirtschaft, Ernährung und Heimat [Federal Ministry of Agriculture, Food and Regional Identity] (BMLEH). Retrospect: Numbers of laboratory animals 2009–2013.  https://www.bmleh.de/DE/themen/tiere/tierschutz/versuchstierzahlen2018.html;jsessionid=B4CF5B6725B8DAFAD09D9FAC3BE5102D.internet2842#doc69038bodyText10