Consumers are expected to spend $17 billion on Valentine's Day gifts this year, roughly a fifth of which will be spent online.

That's according to projections from the National Retail Federation and eMarketer, whose data is visualized in the infographic from Monetate below.

Interestingly, men spend more than twice the amount women spend on Valentine's Day: $112.65 per person versus $51.56 per person, respectively. Spending peaks among ages 25 to 34, and falls steadily after that age range. We'll let you draw your own conclusions about that.