User:Headbomb/Publications by year

• User:Headbomb/Publications by year/1500
• User:Headbomb/Publications by year/1600
• User:Headbomb/Publications by year/1700
• User:Headbomb/Publications by year/1800
• User:Headbomb/Publications by year/1900
• User:Headbomb/Publications by year/2000

These count the number of pages in (using 1999 as an example)

• Category:Publications established in 1999
  • Category:Academic journals established in 1999
  • Category:Magazines established in 1999
  • Category:Newspapers established in 1999
  • Category:1999 comics debuts

And sums them up. Other subcategories are ignored.