This statistic displays Google’s advertising or ad revenue since 2001. In 2015, Google’s ad revenue amounted to almost 67.39 billion US dollars. That year, advertising accounted for the majority percent of the online company’s total revenues.

Google’s ad revenues – additional information

Search advertising is an internet marketing method which positions advertisements on a search engine’s search result pages. Advertisements are therefore tailored to match the keywords or search terms used. Google dominates search advertising in the United States.
In a ranking of the share of search advertising revenue of the leading search sites in the United States from 2011 to 2015 Google ranked first. In 2011, Google was untouchable with its search ad revenue share amounting to more than 74 percent. This significant share is expected to be maintained till at least 2015. In comparison, Microsoft’s search ad revenue share is expected to amount to 13.2 percent by 2015 and Yahoo’s will only amount to 5.9 percent. AOL on the other hand will continue to fall behind its competitors with a share of just one percent.
Desktop advertisers, who choose to invest in Google, do so heavily. In the United States in 2013, Amazon spent more than any other desktop advertisers on Google with ad spending totaling 157.7 million U.S. dollars. Amazon dominated the list of leading advertisers with its nearest rival, Priceline Group, spending a relatively small 82.3 million U.S. dollars. Other names included in the ranking of leading desktop advertisers in Google for 2013 were Microsoft, Walmart and Comcast.
The figures on Google’s quarterly average advertising revenue per user are particularly revealing. In the fourth quarter of 2013, the company’s ARPU peaked at 46 U.S. dollars before decreasing slightly in the following quarter to 45 U.S. dollars.