WHO Health Observatory Data

a) Age-standardized BMI (incl. High&Low) for all countries, since 1980
b) Age-standardized proportion of population with BMI >25 - only 2008
c) Age-standardized proportion of population with BMI >30 - only 2008

Sources:
a) http://apps.who.int/gho/data/?theme=main&node=A904
b) http://apps.who.int/gho/data/?theme=main&node=A897
c) http://apps.who.int/gho/data/?theme=main&node=A900