According to data from Freedom House (2021), out of 198 countries in 2020, 82 systems of government could be regarded as liberal (=liberty prioritizing), and the remaining 116 considered as illiberal systems.
(Note: Freedom House defines liberal regimes as “Free” while illiberal regimes are defined as “Partially Free” and “Not Free.”)
The 82 liberal systems accounted for just under 20 percent of the world’s population in 2020. Of the 82 liberal democracies, 54 are republics, including the U.S.A. The remaining 28 are constitutional monarchies with largely ceremonial monarchs.
Excerpted from America: Democracy or Republic?