As Obama gives his farewell address leaving the party he's lead for eight years in shambles, now is as good a time as ever to point out how much more interest the Trump phenomenon garnered than the Obama one ever did. From Google Trends, search volumes over time since the beginning of 2007:
Trump generated two-and-a-half times as much interest when he won the 2016 election as Obama did when he won in 2008. That won't stop the major media from attaching the prefix "historic" every time Obama's election comes up without granting the same to Trump's election, of course.
Parenthetically, using the adjective to describe a US presidential election is stupid, as though there could be any sort of presidential outcome that wouldn't make its way into the history books.
Now just consider the last 18 months. It's been written and said multiple times, as far back as 2015, that Trump had already effectively become the president by way of driving every discussion. And so he was, averaging about 1200% more interest than the sitting US president did:
You call that change? This is change.