It's impressive that "Lose Yourself" and "Don't Stop Believing" have continued to sell well (seeing as they predate the digital era). Both will be iconic and timeless.
Also Lose Yourself sold 1Million copies last year!! thats the highest in a year for a song that old!!
and as of 1st August, it stands at 5,566,072.
at 28th June, it stood at 5,510,000
it should be around 5.8-5.9M by year End!! maybe 6M with the new album release!!
rose up 50 spots since Berzerk's release!!
it was higher than most of his competitors even before the release (#221)
maybe 6M with the new album release!! 
