I went to Statistics Canada (obviously the numbers are for Canadians)
16.0 Total, 12 years and over
12.8 20 to 34 years
16.8 35 to 44 years
19.0 45 to 64 years
15.7 65 years and over
(sorry, it's not going to line up properly)
The catch is that they are self-reported, so the numbers may be low.
The above was for obese, the following are for overweight:
32.4 Total, 12 years and over
14.4 12 to 19 years
26.4 20 to 34 years
32.7 35 to 44 years
36.9 45 to 64 years
35.3 65 years and over
ETA: Source spreadsheets....
http://www.statcan.gc.ca/cgi-bin/cchs07-en.xls