It’s an American holiday tradition as entrenched as all the others: Waiting until the last minute to do your Christmas shopping.

According to a Reuters/Ipsos poll, only 18 percent of American consumers have finished their holiday shopping, and some 28 percent have not even started.

Some 48 percent of respondents had finished half or less of their holiday shopping, and 16 percent had completed less than 25 percent.

A National Retail Federation survey found similar numbers, with just 11.3 percent of respondents saying they have completely wrapped up their holiday shopping.

Ten percent of respondents said they plan to shop at the very last minute, on Monday, Dec. 24. Another 4.1 percent will shop for their last item after the holiday.

The survey did find that the average person has completed 56.5 percent of their shopping, up from the 46.5 percent recorded this time last year, and the highest percentage in the survey’s 10-year history.

The survey also found that 20.8 percent of shoppers surveyed bought jewelry, compared to 53.1 percent buying apparel; 41.9 percent buying toys; 42.9 percent buying books, CDs, and DVDs; and 28.3 percent buying electronics.

JCK