Another measure, using sentences instead of words, gives my current standing at 47%.
It is a little quicker to calculate. Basically, I score individual sentences. The maximum is 5, and the minimum zero.
Playing around with these two measures itself provides language exposure. And it also adds to my motivation, since I enjoy throwing numerical concepts about.
A friend recently told me that in her opinion all ways and methods for learning a language is okay, and that it comes down to a question of personal choice. The important thing is that you enjoy doing it.
Yes, I certainly agree.