Under rationing, every adult was allowed 8oz (230g) a week - on average we have twice that now.
Just one bowl of a typical breakfast cereal, a serving of baked beans with lunch and a Jaffa Cake would take you over your World War II sugar ration without so much as a sprinkling of white stuff.
It's also interesting to point out that sugar is a mixture of fructose and glucose. The brain can not detect fructose as much as other food sources. So when you keep eating sweet foods, you keep eating them because they don't fill you. Because you can't detect the amount of fructose that enters the body, you eat more then needed, which then turns to fat. That's the sneaky part and leads to obesity.