Did you know that global online expenditure on advertising is expected to reach $94.2 billion this year, and an incredible $603 billion will have been spent in total online advertising by 2015?

The U.S. makes up the bulk of these numbers, accounting for more than 40 percent of the financial output, with Europe and Asia sharing the spoils in second and third place. Google currently enjoys a 44.1 percent share in online advertising, dwarfing Facebook (3.1 percent), but it’s Mark Zuckerberg’s social network where advertising agencies plan to invest the most in the future – some 89 percent rate Facebook as their social marketing channel of choice, ahead of Twitter (39 percent), YouTube (36 percent) and LinkedIn (21 percent).

Social media ad spending is also on the rise in the U.S., with an anticipated outlay of $2.11 billion in 2012, and almost five billion dollars by 2016.

This infographic from Go-Gulf.com takes a closer look at the global online advertising spend.

(Source: Go-Gulf.com. World image via Shutterstock.)