Generational Breakdown of Regional Pokedexes

This topic comes up a lot, we all groan about the Kanto Pokemon in recent dexes and I got curious enough about what the exact breakdown per generation per dex and trends over the years were. And

Pokemon Card 1st Generation 151/150 Complete Kanto Pokedex Set!!! All Pictured Cards Included!!! Cards range from Played to Near Mint!!! A great set

Pokemon Cards 151 Kanto Region Generation 1 Pokedex Complete Collection Lot 18

Pokedex 3D - Johto, 2nd Generation by robbienordgren on DeviantArt

The Best/Worst Regional Pokédexes

Generational Breakdown of Regional Pokedexes

Pokemon Go: how many Pokemon are there in the game's Pokedex?

Leaked Regional Dex, Additional Pokemon & Version Exclusives (v2) : r/PokeLeaks

The Pokedex design in the 2nd generation of Pokemon games set in the Johto region.

Kalos Region Pokedex 2014 (WIP) by TheAngryAron on deviantART

List of Pokémon - Wikipedia

Regional Pokemon of each Generation so far : r/pokemon

Canon Regions on Pokemon-Regions - DeviantArt