1566 porners with Birth Country info are counted (after "singletons" thrown out), then divided by the country’s population (in tens-of-millions) to determine relative porn proclivity (caveat: I don’t include Japanese “AV” stars; these numbers are based on “mainstream” American porn):

Hungary, 176.45
Czech Republic, 100.22
United States, 30.22
Slovak Republic, 22.15
United Kingdom, 11.68
Canada, 11.52
Slovenia, 9.76
Romania, 8.84
Norway, 8.25
Netherlands, 6.03
Panama, 5.79
France, 5.69
New Zealand, 4.63
Sweden, 4.29
Singapore, 4.01
Finland, 3.74
Denmark, 3.61
Germany, 3.18
Australia, 3.17
Israel, 2.68
Switzerland, 2.58
Austria, 2.39
Spain, 1.74
Ukraine, 1.74
Poland, 1.31
Philippines, 1.19
Italy, 1.16
Brazil, 0.99
Taiwan, 0.87
Russia, 0.85
South Korea, 0.83
Mexico, 0.74
Malaysia, 0.71
Peru, 0.69
Argentina, 0.50
Thailand, 0.47
Columbia, 0.44
Japan, 0.16
Indonesia, 0.09
India, 0.03
China, 0.02

The inexplicable missing Eastern European nation = Bulgaria.