You can see the data here. It is pulled directly from Wikipedia with some formatting done.
The 2000 and 2016 elections are great use cases in that the popular vote doesn't reflect the actual outcome and only a third party allocation of votes would break the 51% necessary to win the election. The added benefit would be that the major parties would have to appeal to third party candidates in order to win the swing vote. The hope is that this would help limit the extremism that occurs in a two-party election system.
What does stand out to me is the 1992 and 1996 elections. President Bill Clinton could've lost those elections if the third party candidate chose the other direction. (As an aside, I had no idea Bill Clinton never got the popular vote until I started looking into this.) In this year's election, Gary Johnson's voters would have a huge impact on the outcome and unfair vitriol hurled against them could be avoided.
Some open questions
Some eagle-eyed readers will note in 1996, if Ross Perot allocated his votes to Bob Dole, it would not put either candidate over the 51%. I'm not quite sure how to solve this issue at the moment and would love to have some ideas. I assume you could go down the line and see the 4th or 5th party candidates and how they allocate their votes but this gets a little tedious and we would need an outcome in an expedient manner.
Additionally, I'm not sure how the third party platform can get their platform heard for the party that they back and win. More cabinet positions? He/She would get the VP position? This is still something I wouldn't know and would love to hear ideas.
In Summary
I'm definitely in Clinton's camp in this election and I won't try to hide my view. I think it's important to find good solutions for the problems we face now. I am sad about the outcome of the election but rather than complain about it, let's be Americans and find solutions and work together to fix our issues. I hope this starts a smart discussion with actionable outcomes.