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If you didn't, then AdSense may have otherwise determined that they weren't valid clicks--made by foreign visitors, or the page didn't load, or whatever.
Sounds like what you need is good traffic.
- PSA's (public service announcements, in other words, ads that don't pay but are there for the common cause or charity or whatever)
- Adsense justn't doesn't charge the earnings at the same time as the clicks.
- Clicks were invalid. For example because Adsense considers them to be coming from questionable sources.