Median Bmi Females 2-20 Where Can I Find BMI (Body Mass Index) For Females In Another Country Besides The United States?

Where can I find BMI (Body Mass Index) for Females in another country besides the United States? - median bmi females 2-20

It is therefore a math project and can not find anything, anywhere.
Google, again, does not help.
So to find, to be precise: I have the data on body mass index of women of any other country except the United States. Must BMI, the average age of women. Do not believe the year is really important, why.

Thanks