That's world wide? That's not accurate. ET sold way more than that.
4,682,000 US
240,000 Canada
210,000 Australia
200,000 UK
150,000 Germany
15,000 New Zealand
15,000 Italy
= 5,482,000 Those are just a few countries and based on certifications.
In mediatraffic they count only the sales of a song being in the top 40...
Once a song leaves top 40, they dont count its sales...
And they also include the sales from certain countries!
That's how it works
Katy's Sales, by Mediatraffic:
1. I Kissed a Girl 8.454.000
2. Hot n’ Cold 7.995.000
3. Thinking of You 1.009.000
4. Waking Up In Vegas 2.114.000
5. California Gurls 8.553.000
6. Teenage Dream 5.875.000
7. Firework 7.631.000
8. E.T. 5.298.000
9. Last Friday Night 4.213.000
10. The One That Got Away 236.000
In mediatraffic they count only the sales of a song being in the top 40...
Once a song leaves top 40, they dont count its sales...
And they also include the sales from certain countries!
That's how it works
Oh... That's kinda stupid. Bot much point in going by them religiously I guess.
That's not accurate. ET sold way more than that. 
Legend Perry
, Cali Gurls slayed!
