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| Company | Unit | 2008 | 2009 | 2010 | 2011 | 2012 | 2013 | 2014 | 2015 | 2016 | 2017 | 2018 | 2019 | 2020 |
| McKesson Europe | 0.735 | 0.689 | 0.729 | 0.859 | 0.848 | ... | ... | |||||||
| Zalando | ... | ... | 1.92 | 1.60 | 1.31 | 1.03 | 0.893 | |||||||
| zooplus | ... | 0.861 | 0.842 | 0.856 | 0.663 | 0.587 |
Helgi Library 
