Concept As at
2017-12-31
As at
2017-12-31
As at
2016-12-31
As at
2016-12-31
As at
2015-12-31
As at
2015-12-31
As at
2014-12-31
As at
2014-12-31
As at
2013-12-31
As at
2013-12-31
Employees
Information about group
Number of employees of group
Number of employees
485 xbrli:pure
521 xbrli:pure
477 xbrli:pure
515 xbrli:pure
460 xbrli:pure
499 xbrli:pure
440 xbrli:pure
479 xbrli:pure
433 xbrli:pure
472 xbrli:pure
Average number of temporary employees
120 xbrli:pure
146 xbrli:pure
143 xbrli:pure
174 xbrli:pure
131 xbrli:pure
166 xbrli:pure
123 xbrli:pure
153 xbrli:pure
119 xbrli:pure
151 xbrli:pure

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