30%: How much more on average Americans spent on Mother’s Day compared to how much they plan to spend on Father’s Day.

It should come as no surprise that Americans spend more on Mom than Dad, but over the last few years the gap has narrowed a bit.

According to data from the National Retail Federation, the average person will shell out $117.14 for Father’s Day this year. That’s up from last year, but consumers planned to spend about 30% more on Mother’s Day — about $152.50. The difference, is growing smaller, though. In 2008, even though consumers spent less overall on both holidays, Moms were getting 47% more spent on them than Dads.

It makes perfect sense that kids (and Dads for that matter) should be more appreciative of mothers. For one thing, pregnancy and childbirth deserve at least some premium. But beyond that Moms are often the ones who do more heavy lifting in child care. According to one analysis by Insure.com, mothers provide about $60,182 of value for a household compared to a measly $20,248 for fathers.

Now those numbers are based on some slightly antiquated notions, such as Mom getting credit for 40 hours a week of child care, while Dad gets zero. But even the hard data show that mothers spend more time taking care of kids than fathers.