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7. Halloween

Share of total holiday spending: 2.6 percent
2010 spending: $6.0 billion
Change from 2009: +1.7 percent

With more adults joining in the fun, Halloween is becoming a bigger occasion to splurge on for many people. However, the holiday still has a way to go to stack up with other major national holidays.

One factor is that Halloween is not a major gift-giving event. Instead most of the money is spent on costumes and decorations.

Photo: Getty Images