While I've been using my own "play session statistics" mod for the past 5 years I never collected the data until recently, when I added code thatprinted it out to the game logso it could automatically be collected, and I made charts of this data over a 100 day (play session) period, perhaps the best example so far ofjust how much caving I do- over this period I mined an average of 3476 resources, 3256 ores, collected 5504 XP, and killed 361 mobs - every day for 100 days straight.
This shows all the data; "resources" includes ore blocks (not the individual drops), rails, cobwebs, and moss stone, while mob kills only include the mobsshown here(other mobs are not included, including a handful of silverfish). The amount of XP collected does not always track the amount of ores mined and mobs killed since I accumulate iron and gold ore in my ender chest, and when I smelt it I may not come back to empty the furnaces right away: