Since it's release in September last year,
True by Avicii has sold roughly 1.8 million copies WW, according to data provided by Musicharts.
WW Chart RunWeek 1: 21,900 (#42)
Week 2: 193,500 (#2)
Week 3: 95,700 (#6)
Week 4: 74,300 (#7)
Week 5: 55,300 (#11)
Week 6: 59,100 (#12)
Week 7: 54,700 (#10)
Week 8: 48,500 (#13)
Week 9: 41,200 (#16)
Week 10: 38,700 (#22)
Week 11: 38,400 (#26)
Week 12: 55,300 (#26)
Week 13: 59,400 (#22)
Week 14: 58,500 (#30)
Week 15: 77,200 (#24)
Week 16: 89,200 (#18)
Week 17: 89,400 (#8)
Week 18: 70,400 (#8)
Week 19: 65,300 (#9)
Week 20: 59,600 (#11)
Week 21: 63,600 (#11)
Week 22: 59,600 (#13)
Week 23: 57,300 (#13)
Week 24: 52,600 (#15)
Week 25: 47,800 (#17)
Week 26: 50,700 (#13)
Week 27: 55,800 (#10)
Week 28: 47,700 (#14)
Week 29: 53,300 (#8)
Considering it's US sales are tragic (of it's 6 weeks in the top 40, only 2 had it in the top 20), it really shows how being huge global/WW can really help an artist's sales.
Finally some great song in the top 10 
they all sounded the same to me. He used to be really good. I miss urban pharrell.
