Blank Space by Taylor Swift is now diamond certified

Question

Blank Space - Taylor Swift 

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Peak - 3 (1×) 

Weeks - 15 

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SALES 

Pure - 3.1 Million 

Digital - 7 Million 

Sps - 10.1 Million 

CERTIFICATION

1× DIAMOND 

Answer 1

On my chart, Blank Space is the biggest hit of all-time:

Pure Sales 
 5.200.000

Weeks 
 45

Peak 
 1

Points 
 2.884

SPS 
 9.534.652

Certification 
1x  + 5x 

Answer 2

15 weeks only? wow

Answer 3

hino #1