Final Edit

ConvertTime now includes LongBaseYear, which outputs the Annual Time
with SI-prefixed units.

During this edit, I tried a couple of things and my rounding method came
into question. After substantial Googling, arithmetic, and comparison
testing, I remembered Tom Scott's advice for programmers never to deal
with time (http://youtu.be/-5wpm-gesOY), and immediately let that go.

I also realized that this won't be accurate for leap years or years with
leap seconds, which are just years where humanity will have to tough it
out unless I'm going to get paid for this.