Ericsson Nikola Tesla`s ROA reached 12.8 % in 2015. This is 28.4 % more than in the previous year.
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| Company | Unit | 2003 | 2004 | 2005 | 2006 | 2007 | 2008 | 2009 | 2010 | 2011 | 2012 | 2013 | 2014 | 2015 |
| Ericsson Nikola Tesla | % | 8.36 | 1.62 | 2.14 | 10.8 | 13.0 | ||||||||
| Hrvatski Telekom | % | ... | 13.7 | 13.1 | 13.6 | 12.9 | 11.1 |
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