Halal certifier Mohamed El-Mouelhy sues anti-halal campaigner Kirralie Smith for defamation, page-124

The way the ABC reported it sounded like halal certification was bringing in $13B in fees. That makes more sense now, thanks for the clarification.

""Halal certification is an industry and it is bringing in a few billion dollars. Last year I think it was about $13 billion. It is a requirement by all Muslim countries," he told 7.30."

Reading it again you can take it either way I guess (maybe my bias at work )