I am working on a research program about social media traffic and my mission is to find official usage data for major platforms like YouTube, Facebook, Twitter, Wikipedia etc.
Wikipedia provides official Worldwide stats per year https://stats.wikimedia.org/#/all-projects
Does anyone know where I can find similar official source about Facebook, YouTube and Twitter statistics?
Please note that both Youtube and Facebook provide some metrics worldwide about Monthly Active Users (MAUs) and Daily Active Users (DAUs) but my goal is to find yearly records about total page/video/tweet views like Wikipedia's
Thank you in advance.