At least to the general public…
The 2017 BATF production statistics, Annual Firearms Manufacturing and Export Report (AFMER), https://www.atf.gov/file/133476/download have been released. There are some interesting facts about market trends in it. The snub nose .38, which was a long time standard for Personal Protection, has clearly been replaced in popularity by compact .380 ACP autoloaders. This continues a trend that has been building for a decade.
Total .38 revolver – 177,956
Total .380 autoloader – 848,425