Time for an update:
Three years later I've been to a few more countries but there are still 91% and two entire continents missing.
Here are the countries on my “done list”: Austria, Bulgaria, Canada, China, Czech Republic, Denmark, France, Germany, Hungary, Ireland, Italy, Japan, Netherlands, New Zealand, Poland, Portugal, Sweden, United Kingdom, United States.
As a refresher, this is how my map looked three years ago:
I really look forward to our Iceland vacation soon – it will add another little red dot .
BTW. you're still welcome as my world tour sponsor