Did anyone research the data about scientific productivity? I.e. what is the average number of articles written by author in a year in a specific field? I am referring to average, since this is maybe easiest to calculate, but it would be interesting to see the distribution data too. This of course depends on how many journals we want to scope, but I would be interested to see any data on say most popular fields like physics, mathematics, chemistry, biology, psychology, economics, etc (order is of no importance).
In the subject that I am familiar with, political science, there is a recent study using bibliometric data on patterns of publishing in journals - maybe this could be interesting (and might be similar to already mentioned work in other comments): https://www.cambridge.org/core/journals/ps-political-science-and-politics/article/patterns-of-publishing-in-political-science-journals-an-overview-of-our-profession-using-bibliographic-data-and-a-coauthorship-network/D946105595ED2C314AE2A04138F7A5B6
As the authors state:
We drew on more than 67,000 papers published from 1990 to 2013 in one of today’s 96 core journals. The network consists of more than 40,000 authors located worldwide.
and regarding your question, they find this:
Whereas some are highly productive in terms of publications, the majority of authors published only a single paper, which suggests significant turnover in the community.
You should have a closer look at it (although polsci is not in your list of mentioned disciplines)