PNC Wealth Management has calculated this year's Christmas CPI to be $21,465.56. That's up from $21,080.10 last year.
The index, which tracks the total cost of the 78 gifts from the carol "The Twelve Days of Christmas," has been around since 1984. PNC's website lets you play around with some of the historical data to see how much the price of swans-a-swimming, for example, has changed over the years.
This is the kind of valuable information you can impress your friends and family with over the holidays - but maybe only after one-too-many eggnogs.