It's really important to read news reports to become more familiar with how they describe data and statistics (so you can avoid using inappropriate words like 'elucidate').
I was reading this article about people crossing the English Channel:
Nothing really, except that 'treble' is hardly ever used in the US.
Notice also the reference word "that of" to avoid repeating 'The number of people who crossed'.
In the Members Academy Task 1 Bootcamp, we've been practising all of these structures to improve our Task 1 score e.g.