visited 44 states (19.5%)
I came across this programme which I suppose is a bit of a self congratulatory exercise in boasting about the various countries you have visited.
While it looks as though I covered most of he Northern Hemisphere, I have to admit that my visit to Russia (for example) involved only fleeting visits to Murmansk, Solovestski Islands, Archangel and St Petersburg, so there is a vast expanse to the east that is yet to be discovered. The same could be said for Brazil, Argentina, Alaska and even the USA. So little time, so much to see.
Create your own visited map of The World or Like this? try: Sea Level Rise