I’m considering joining.

Although this report is from last December, it says there were 4,151 male members and 7,270 female members. They usually publish the previous month’s figures every month, but it seems they forgot to release the January figures in February. As you can see from the fact that 658 women joined in December alone, female members come and go much more frequently than male members. This means that while their membership is active, men can look for a partner from among more women than the current number of female members suggests.