German casinos have been visited by one-third of the country’s population, according to a new YouGuv survey.

The survey, which was commissioned by German casino association Deutscher Spielbankenverband (DSbV), showed that 33% of respondents had placed some kind of casino bet at least once in their lives. The figures were higher for men (39%) than women (28%), and also higher in the former West Germany (34%) than in the now defunct DDR (28%).

At the end of 2015, Germany had 66 licensed casinos, offering a combined 550 gaming tables and around 7,500 slot machines. They generated combined revenue of €556m last year, the bulk of that (€399m) from slots play.

Slots may generate the most revenue, but the YouGuv survey found roulette to be Germany’s most popular casino option, with 63% of respondents admitting to placing a spinning wheel wager, while slots were enjoyed by roughly half of respondents.