Very interesting, thanks. A few quick impressions:
-I notice that two thirds of those who identify as non-binary are female. So non-binary is female-dominated...
-The overall numbers are far lower than online discussions of various types have suggested. Even the youngest recorded group only has 1% with trans/non-binary identities.
-That two-thirds of trans women gave their sex as female and two-thirds of trans men gave their sex as male does suggest possible problems when they need sex-specific health care. It could be that they are not reporting their sex to their health care providers if they don't report it in the census. Or that the queering of language now affects even them.
-That the non-binary category (17,000) in the youngest group is larger than either the trans men category (14,000) or the trans women category (9,000) seems to matter to me as the non-binary identification does not, in principle, require the person to do anything differently but still qualifies for different treatment. Questions such as what category in sports the non-binary people should be allowed to pick get extremely complicated if they do not differ from the male and female categories in anything but inner identification. (I don't see why sports categories would ever be based on feelings, though, but here the problem becomes glaringly obvious).