Worldwide online video advertising spending from 2005 to 2016 (in billion U.S. dollars)

  Advertising expenditure in billions of U.S. dollars
2005 0.1
2006 0.4
2007 0.7
2008 1.5
2009 2.2
2010* 3.3
2011* 4.7
2012* 5.8
2013* 7
2014* 8.3
2015* 9.8
2016* 11.4
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This statistic shows a time series of advertising spending in the online video segment. In 2009, the global online video ad expenditure was approximately 2.2 billion U.S. dollars in 2009, up from 1.5 billion U.S. dollars in the previous year.

Internet - Statistics & Facts
Internet  - Statistics & Facts
Additional information
You can find additional information about this statistic on statista.com
http://www.statista.com/statistics/272856/worldwide-online-video-advertising-spending-forecast/