Yes, and amongst the Thai upper-class that percentage is much, much higher. https://en.wikipedia.org/wiki/Thai_Chinese#21st_century
Depends on what you define to be a crime. In other countries, some of the unrequested physical attention I've received from katoeys whilst walking down 6/1, or past Fantasy Lounge on Buakhao, would be classified as sexual assault. Not that I'm anymore than mildly irritated by such behaviour, I might add.