Eckdaten
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| | in Mio. € | 2004 | | 2005 | | 2006 | | 2007 | | 2008 |
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| | Umsatz | 1 645 | | 1 980 | | 2 436 | | 2 481 | | 2 537 |
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| | Anlagevermögen | 659 | | 1 093 | | 1 393 | | 1 198 | | 1 327 |
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| | Investitionen in immaterielle Vermögensgegenstände und Sachanlagen | 86 | | 114 | | 134 | | 138 | | 161 |
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| | Abschreibungen auf immaterielle Vermögensgegenstände und Sachanlagen | 84 | | 110 | | 133 | | 150 | | 156 |
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| | Bilanzsumme | 2 785 | | 3 069 | | 3 163 | | 3 191 | | 3 255 |
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| | Mitarbeiterzahl (Anzahl im Jahresdurchschnitt) | 6 484 | | 7 486 | | 8 667 | | 9 083 | | 9 053 |
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| | Festkapital und Kapitalrücklage der Wilh. Werhahn KG | 246 | | 246 | | 246 | | 246 | | 246 |
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| | Rücklagen im Konzern | 1 250 | | 1 277 | | 1 315 | | 1 144 | | 1 237 |
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| | Fremdanteile | 35 | | 42 | | 31 | | 31 | | 36 |
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| | Eigenkapital | 1 531 | | 1 565 | | 1 592 | | 1 421 | | 1 519 |
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