4. Advertising Investments - Radio Top Advertiser Groups Radio : 2015 Top 10 D’IETEREN GROUP PSA PEUGEOT CITROEN CARREFOUR GROUP COLRUYT GROUP CLT-UFA DE PERSGROEP ING GROEP FRANCE TELECOM PROXIMUS GROUP RTBF 1000 15 744 11 931 9 448 7 889 7 282 7 097 6 799 6 734 6 525 6 299 141
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