Skip to main content
U.S. flag

An official website of the United States government

Official websites use .gov
A .gov website belongs to an official government organization in the United States.

Secure .gov websites use HTTPS
A lock ( ) or https:// means you’ve safely connected to the .gov website. Share sensitive information only on official, secure websites.

Skip to content
  • Feedback

    • PubMed total records by publication year

    Metadata Updated: June 19, 2025

    Yearly citation totals from each year of the MEDLINE/PubMed Baseline referencing citations back to year 1781. These totals may increase over time for a particular year as new citations are added. For example, 25 citations were listed for the year 1800 in the 2018 MEDLINE/PubMed Baseline, while the 2019 Baseline includes 387 citations for that year.

    Access & Use Information

    Public: This dataset is intended for public access and use. License: See this page for license information.

    Downloads & Resources

    Dates

    Metadata Created Date March 16, 2021
    Metadata Updated Date June 19, 2025

    Metadata Source

    Harvested from Healthdata.gov

    Other Data Resources

    Additional Metadata

    Resource Type Dataset
    Metadata Created Date March 16, 2021
    Metadata Updated Date June 19, 2025
    Publisher National Library of Medicine
    Maintainer
    Identifier https://datadiscovery.nlm.nih.gov/api/views/eds5-ig9r
    Data First Published 2022-02-10
    Data Last Modified 2025-06-18
    Category Information Management
    Public Access Level public
    Bureau Code 009:25
    Metadata Context https://project-open-data.cio.gov/v1.1/schema/catalog.jsonld
    Metadata Catalog ID https://healthdata.gov/data.json
    Schema Version https://project-open-data.cio.gov/v1.1/schema
    Catalog Describedby https://project-open-data.cio.gov/v1.1/schema/catalog.json
    Harvest Object Id cf374bb1-0dd0-42d4-ada9-8d73aace11b2
    Harvest Source Id 651e43b2-321c-4e4c-b86a-835cfc342cb0
    Harvest Source Title Healthdata.gov
    Homepage URL https://datadiscovery.nlm.nih.gov/d/eds5-ig9r
    License https://www.usa.gov/government-works
    Program Code 009:041
    Source Datajson Identifier True
    Source Hash 666edc6b39e06610b7e5ab713faf0ec3f2956b18dc61fa1042d1b29a7acbd663
    Source Schema Version 1.1

    Didn't find what you're looking for? Suggest a dataset here.