Google's paid clicks went up 25% Y-o-Y in Q2 2014

"Paid Clicks - Aggregate paid clicks, which include clicks related to ads served on Google sites and the sites of our Network members, increased approximately 25% over the second quarter of 2013 and increased approximately 2% over the first quarter of 2014. Sites paid clicks, which include clicks related to ads we serve on Google owned and operated properties across different geographies and form factors including search, YouTube engagement ads like TrueView, and other owned and operated properties like Maps and Finance, increased approximately 33% over the second quarter of 2013 and increased approximately 6% over the first quarter of 2014. Network paid clicks, which include clicks related to ads served on non-Google properties participating in our AdSense for Search, AdSense for Content, and AdMob businesses, increased approximately 9% over the second quarter of 2013 and decreased approximately 5% over the first quarter of 2014.
Cost-Per-Click - Average cost-per-click, which includes clicks related to ads served on Google sites and the sites of our Network members, decreased approximately 6% over the second quarter of 2013 and remained constant from the first quarter of 2014. Cost-per-click for Google sites decreased approximately 7% over the second quarter of 2013 and decreased approximately 2% over the first quarter of 2014. Network cost-per-click decreased approximately 13% over the second quarter of 2013 and increased approximately 3% over the first quarter of 2014."

Source:  Google's Q2 2014 Results, 17th July 2014