Derpibooru is getting wired

AmarthGul
A Really Classy Artist - 250+ images under their artist tag
Wallet After Summer Sale -
An Artist Who Rocks - 100+ images under their artist tag
Artist -

Ego Sum Dominus
I did not intend to do this, it was just curiosity bumped onto some leisure time. But what I got is indeed funny while astonishing.  
So, what I did is sample image index 1400000 to 1858666, with interval of 15, that’s 30577 samples in total. These images cover from Mars, 2017 to October 2018, which is appropriate to be called as “Recently”. Then I visualized the data to have a more intuitive view of popularity.  
… then I was shocked …  
After that, I decided to do another sample, this time still 30577 samples, but from 1 to 458656, which starts in January 2012 and ends in October 2013. Then compare if these 2 samplings have similar result
 
I’m gonna omit downvote and comments, just focus on favourites  
For the early time: https://imgur.com/FUA9znX  
And for recently: https://imgur.com/ENJaK9J
 
I would like to kindly remind you some of the interesting facts:  
• The rank of safe fell from 1st to 6th, The votes of safe did not become less, it’s just the votes of female became to many  
• Nudity and explicit exceeded safe in recent years  
• Fluttershy, Rarity and Applejack were all in top 20, but there is no specific pony in the recent one  
• In the early sample, there are 4 tags in top 20 that strongly associate with #NSFW content, namely nudity, explicit, breasts and nipple; in recent years, there are 7 of them: nudity, explicit, breasts, nipple, vulva, penis and sex
 
Never expect that before =_=
 
Full result: megaLink
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