Unfortunately I don&#x27;t think that data is available. But from what I understand it has led to more giving. See this article - <a href="http:&#x2F;&#x2F;fortune.com&#x2F;2010&#x2F;06&#x2F;16&#x2F;the-600-billion-challenge&#x2F;" rel="nofollow">http:&#x2F;&#x2F;fortune.com&#x2F;2010&#x2F;06&#x2F;16&#x2F;the-600-billion-challenge&#x2F;</a>