Relying on three rosters of members published in 1930, 1940 and 1948, the following graphs aim at analyzing members' occupations (at a finer level, closer to the Rotarian's typology in the original document) over the period 1919-1948, in general and by nationality, with a particular focus on the three dominating groups (Chinese, American and British Rotarians). 

NB For better legibility, please refer to the attached PDF (doc 5)