it's extraordinary how far ahead of the next countries the UK and USA are in the categories measuring countries. I mean, they would obviously be at the top, but they are miles ahead of the third place-holders.
I think there are a couple of reasons why US and UK dominate.
1) lots of zoos and related facilities. I mean LOTS.
2) English speaking countries.
Other countries such as France, Netherlands, Germany all have lots of zoos too - but English isn't their first language, so we aren't quite as likely to get as much traffic from those countries.
Also, the Brits are just crazy about their zoos.
I think this chart shows the history fairly well - traffic from the UK picked up strongly in 2008 and really took off in 2009 and 2010.
Things were pretty even through 2011 - 2014 and then the UK started to pull away again since 2015.
Interestingly, if you look at the same chart showing users rather than pageviews, you get a slightly different picture. We've always had more visitors from the US (thanks primarily to Google), they just don't generate anywhere near as much traffic (pageviews and posts) as our UK members have.
More recently, we've started seeing a LOT more international search engine traffic, while in the past it was predominantly US and AU based.
Question: what does "(not set)" mean? It's obviously measuring a particular country or city or whatever the chart is for, but why does it not show it?
There's various reasons behind that data - mostly it is because they either can't determine the value because it is ambiguous, or in some cases it simply isn't made available.
I'm not exactly sure why we might see multiple (not set) values in the location stats.