Any good website to check KPop Numbers? (sales, views on YT/stream, etc)

Exactly what the title says, I am new to Kpop and I wanna know the numbers of each Kpop Group to have an idea which ones are the biggest ones so I can check their songs.

Streaming sites doesn't help with it because most of them only show the most recent successes and trendings and I want to track per year, like which Kpop groups made most success in 2014 for example.