Merck CR`s ROA reached 6.74 % in 2017. This is 1.9 % more than in the previous year.
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| Company | Unit | 2000 | 2001 | 2002 | 2003 | 2004 | 2005 | 2006 | 2007 | 2008 | 2009 | 2010 | 2011 | 2012 | 2013 | 2014 | 2015 | 2016 | 2017 |
| Amgen Czech Republic | % | ... | ... | ... | ... | ... | 23.5 | 11.7 | 12.0 | 16.7 | 13.2 | ||||||||
| Bayer Czech Republic | % | ... | ... | ... | 15.8 | 12.4 | 15.1 | 15.5 | 16.3 | ||||||||||
| GlaxoSmithKline Czech Republic | % | ... | ... | ... | 8.14 | 5.87 | 5.32 | 3.99 | 6.04 | ||||||||||
| Merck Czech Republic | % | ... | ... | 12.4 | 13.4 | 5.24 | 6.84 | 13.6 | |||||||||||
| Novartis Czech Republic | % | 3.15 | 3.43 | 3.46 | 5.22 | 4.65 | |||||||||||||
| Pfizer Czech Republic | % | ... | ... | 7.86 | 1.77 | 5.40 | 4.67 | 3.10 | |||||||||||
| Roche Czech Republic | % | ... | ... | ... | 2.14 | 1.69 | 5.88 | 4.16 | 2.10 | ... | |||||||||
| Sanofi-Aventis Czech Republic | % | ... | ... | ... | ... | 1.75 | 1.40 | 2.18 | 0.047 | 2.35 | |||||||||
| Servier Czech Republic | % | ... | ... | ... | ... | ... | ... | ... | ... | ... | ... | ... | ... | 13.4 | 13.2 | 7.53 | 5.92 | ||
| Walmark | % | ... | ... | ... | 12.3 | -0.181 | -0.484 | 2.06 | -38.7 |
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