just to provide some perspective, a quick google search (oops) informed me that google sees 5.9 billion searches a day (about 2.16 trillion searches in 2013). Before the Snowden revelation, DDG enjoyed a slow but steady growth, getting around 50 mil queries a month, and rapidly increased to over 100+ mil after the leak.

http://www.statisticbrain.com/google-searches/

https://duckduckgo.com/traffic.html