Sadly the stats don't go further than 2015 in terms of map stats within the top 30 range.
In 2015 the only map with a T winning % was de_dust2.. which was 50.03% T side winning %. However, when you sort it by top 30 cache and cbblestone become T sided maps as well while Overpass is only at 52% winning percentage CT side.
Currently, with-in the last month, Vertigo is the only map with a T side winning % and it is at 50.05%. Inferno is the next closest map at 48.1% and the next closest map after that is at 44%.
It's a small sample size right now but hopefully the meta changes a bit. One side dominating on almost every map is kinda crazy at the professional level.