Number of Papers published in area of work I'm looking for some statistics related to the amount of papers published per year in an specific area. Some papers about Superconductivity said there was like 15000 papers published about superconductivity in high Tc iron-based superconductors. I'm interested in the area of fluid mechanics of swimming microorganism. Any idea where can I find this statistics? (like scopus, etc)
Many Thanks!
I would recommend the following sources of information to get some statistics on your specific research topic:

Scopus (as you mentioned)
Web of Science
Engineering Village
IEEE Xplore
Science Direct
ACM Digital Library
Taylor and Francis
Google Scholar (Need to be extra careful in cross-checking where the information comes from as it might include sources of information other than academic papers)

Out of the six options, I would prioritize the usage of Scopus as it is easy to search for documents and get summary statistics. You need to do some extra manual work when searching in other databases as others are not very user-friendly as Scopus.