Study the given data table and find the maximum percentage increase of tea from the previous year to the next year.

Let's calculate the percentage increase for tea year-by-year: | | | | |
1. From 2020 to 2021:
* Value in 2020 = 13
* Value in 2021 = 15
* Increase = $15-13=2$
* Percentage Increase = $\frac{2}{13}\times 100\approx 15.38\%$

2. From 2021 to 2022:
* Value in 2021 = 15
* Value in 2022 = 17
* Increase = $17-15=2$
* Percentage Increase = $\frac{2}{15}\times 100\approx 13.33\%$

3. From 2022 to 2023:
* Value in 2022 = 17
* Value in 2023 = 20
* Increase = $20-17=3$
* Percentage Increase = $\frac{3}{17}\times 100\approx 17.65\%$

Comparing the results, the maximum percentage increase is 17.65%.