It’s a metaphor,
She’s saying she’s all these ages to get a point across, not literally.
A group of related words which has both a subject and a predicate is called a clause.
I would say that it hasn't increased 20% because 1. if the starting percentage was 18%, you would see a larger precentage but that isn't the case.
<span>the conclusion is found within the final couplet.</span>
