Actually, the 'average' (mean presumably) intake won't apply to you as an individual in any meaningful way. You'll have to try and monitor your daily diet, focusing on known high-sugar foods and most commonly consumed foods. This data is all over google, thanks for various consumer protection laws. Example:

60kg/365 = 164g per day sugar in a coke: 39g sugar in starbucks skinny latte: 13.2g / 17.5g / 22.9g (small->large) heinz ketchup: 23.7g / 100g etc.

(Looking at that list, I probably hit 100g or more per day, even though I stopped adding sugar to my tea and coffee.)