warpus
Sommerswerd asked me to change this
This website, if you do not like wiki, but wiki breaks it down further. The first one does not show the break down of the time of inflation. The math of the "Big Bang" shows the time of inflation. The size does not change much though in the first 400,000 million years, and not much between then and now, if you consider that the expansion is supposed to be exponential. The 32 page PDF that you posted explains the exponential factor in greater detail than the wiki page does. It is probably nigh impossible to get a good picture of a 4d expansion, but if the graph was done from calculating the equation, then it should be fairly close. Inflation was the big bang, expansion came later.
You are right that the initial expansion was much more rapid, but the universe has been expanding ever since the Big Bang. It is in no way the same size now as just a couple minutes after the Big Bang, I dare you to find a sentence that says that anywhere in the links you have provided.