Google?s full year revenue for 2014 was $66 billion, up 19% year on year, and this quarter, the company's revenue was $18.1 billion, despite strong currency headwinds. Google reported consolidated revenues of $18.10 billion for the quarter ended December 31, 2014, an increase of 15% compared to the fourth quarter of 2013. Google reports advertising revenues, consistent with GAAP, on a gross basis without deducting traffic acquisition costs (TAC). In the fourth quarter of 2014, TAC totaled $3.62 billion, or 22% of advertising revenues.

Aggregate paid clicks, which include clicks related to ads served on Google sites and the sites of Google's Network members, increased approximately 14% over the fourth quarter of 2013 and increased approximately 11% over the third quarter of 2014. Sites paid clicks, which include clicks related to ads we serve on Google owned and operated properties across different geographies and devices including search, YouTube engagement ads like TrueView, and other owned and operated properties including Maps and Finance, increased approximately 25% over the fourth quarter of 2013 and increased approximately 18% over the third quarter of 2014.

However, 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, decreased approximately 11% over the fourth quarter of 2013 and decreased approximately 7% over the third quarter of 2014.

Google also sais that on a worldwide basis, the company employed 53,600 full-time employees as of December 31, 2014, compared to 51,564 full-time employees as of September 30, 2014.