Which sentence is more clear? I want to say that sales increased by three times. But it is not exactly three times, it was an increase from 15 to 47.
As for selling fair-trade bananas, Switzerland, which occupied the highest position in both estimated years, witnessed about a three-times increase from 15 to 47 million euros.
As for selling fair-trade bananas, Switzerland, which occupied the highest position in both estimated years, witnessed approximately a three-times increase from 15 to 47 million euros.