But that 20% is growing, and the amount of newspaper digitization projects are growing also. Whether they be commercial subscription sites, state wide projects, or small library digitization projects for just one newspaper, they all add up.
Here is a list of new digitization efforts that are either in progress or are recently completed. Most are in the U.S., but there are others from Canada and elsewhere. The link will take you to an article that describes in more detail the status of the project.
California - Coronado Library Is Driving Force Behind Digitization Of Historic Coronado Newspapers
California - Library digitizes historical newspapers
California - Microfilm Conversion Solution from BMI Imaging Takes SJSU Back to the Past with the Digital Conversion of The Spartan Daily Newspaper
Delaware - Digital project rescues newspapers from antiquity
Delaware - Delaware Gets New Online Historic Newspapers
Georgia - When formal records fail, newspapers can save the day
Indiana - WPA indexing keeps century-old news at fingertips
Indiana - IU Southeast receives grant to microfilm, digitize issues of student newspaper
Indiana - Indiana's Hoosier Chronicles Adds 17,500 More Online Historical Newspaper Issues
Indiana - Star Press donates newspaper clippings to Ball State
Iowa - 5 Local Projects Land State Historical Grants
Iowa - Digital newspapers now available
Iowa - State gets federal grant to digitize historic records
Kansas - Digital Archives of the Morrill Public Library
Louisiana - Rapides Parish Library has historical Cenla newspapers online
Maine - Maine State Library receives grant for newspaper project
Maryland - University of Maryland got $250,000 to digitize newspapers spanning four centuries
Massachusetts - Library completes first phase of digitizing local newspapers
Missouri - Paper's archives now available to 1880s
Nebraska - Museum aims to preserve print history
Nebraska - From microfilm to the internet: SML working to convert microfilm into searchable database
New Jersey - Rutgers to bring historic N.J. newspapers alive online
New York - Newly Added Staten Island Online Historical Newspapers
Nova Scotia - Digital project in place to preserve Gaelic and Acadian voices
Ohio - Century-old county newspapers find online home
Pennsylvania - Ledger archives will soon be available at library, historical society
Pennsylvania - Around the region, Aug. 17, 2016 - Pottsville
South Dakota - Six more historic newspaper titles now available online
Tennessee - Papers to Pixels project brings past issues of News Sentinel to life
Utah - Archiving effort back underway
Virgin Islands - Early Danish West Indies Newspapers Digitized
Wisconsin - Foster Library digitalizes Union’s first two decades
Hopefully the paper or location is in the area of your research!
I'm sure there are more projects underway - these are just some that have written articles about them.
If you know of more - please let us know in the comments.