Do more people use simplified or traditional Chinese worldwide? Worldwide, do most people use simplified or traditional Chinese writing? This can be either in the number that tend to use one over the other, or total number using each even though there will be overlaps of people who use both in different situations. If possible, does anyone have specific numbers? Are these numbers trending to exaggerate the difference or is the gap closing?

There are many resources which provide which countries/cities/areas tend to use which system. However, I'm having a surprising amount of difficult finding numbers, or even an authoritative answer on which one is more commonly used worldwide.
China Mainland has 1.4 Billion population(and increasing), and the official language is Simplified Chinese. 

According to the Washington Post, there are about 1.5 Billion Chinese native speakers, 50 Million non-native speakers. You can do the math.

Obviously, you can't find another 1.4 billion group of people use Tradition Chinese on the earth.