Nielsen ratings showed that TV viewership of the inauguration in the US was 30.6 million, more than Obama's second inauguration in 2013 (20.6 million), but less than Obama's first inauguration in 2009 (38 million) and Reagan's first in 1981 (42 million). Trump's inauguration became the most streamed Twitter video during the site's decade-long history with more than 6.8 million views.