Sixty-three percent of countries around the world provide guaranteed paid parental leave for fathers, according to a report out Tuesday morning from the World Policy Analysis Center.

Why it matters: Though support is growing for paternity leave, there's still a stigma attached to men who take time off to care for their children. Yet, studies find numerous benefits for the economy, for fathers, and for their partners.

• "There is widespread recognition that we don't solve gender equality without dads getting leave," says Jody Heymann, founding director of the policy center and a UCLA distinguished professor of public health and public affairs.

The big picture: Back in the 1990s, only 46 countries had a paid leave policy for fathers, largely high-income nations, per the policy center's data. Now the number is nearly three times as high.

• Conspicuously absent from the list: The U.S.

Worth noting: The U.S. is also one of just seven countries in the world that does not guarantee paid maternity leave.

• The other countries are the small island nations Marshall Islands, Micronesia, Nauru, Palau, Papua New Guinea, and Tonga.