Netherlands at #1 seems about right. I was very surprised at how everyone in Amsterdam spoke English. And I'm not exaggerating when I say everyone. We were in the city for a week and I can't remember running into even one local who I couldn't have a conversation with. Now when we went to Groningen, my dad's home town but still a relatively big city, it was a different story. There I would estimate it was about 50% of the people I came in contact with spoke fluent English.