The waning of a star - Drupal on the decline

Drupal is on a fairly significant downward trend. Has social media killed the CMS star? Even with the release of Drupal 7 in Jan 2011 not a blip....

But no effect on wordpress? What happened to Drupal?

drupal.org

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lullabot.com

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acquia.com

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but... wordpress.com

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more ...