My main site is getting close to that in recent months. Maybe soon.
But that is mostly all JP people. Wonder how many JP nutaku get.. heh.
Not so many I believe, I think last I remember was around 25% US 6.3%, Germany, 4% Brazilian then France.... and so on. The Japanese that try to navigate to Nutaku are redirected to DMM.com and vice versa. Unless they use a proxy.