Betting on two of Australia’s most popular sports - Aussie rules football and rugby league - is predicted to double over the next five years.

A report by Deloitte on behalf of online bookmaker Sportsbet revealed that sports betting turnover has increased significantly each year. This was largely attributed to the growth in online wagering, the Sydney Morning Herald reports.

According to the company’s research, annual betting on the AFL has hit AU$900m, with a further $750m bet on the rugby. Over the next five years, this is set to rise to $1.8bn and $1.5bn, respectively.