Today is Tooth Fairy Day. I'm sad to say, I found out she’s leaving less under the pillow than she used to.

Guang Niu, Getty Images

In honor of National Tooth Fairy Day, Visa took a 'Tooth Fairy Survey' and found that American children are making $3.40 per lost tooth this year. This amount is less than what kids were getting last year. But the number are still up from 2011 when she was leaving an average of $2.60.

Does the tooth fairy still leave money under your pillow? How much are your children making? Tell us in the comment section below.