Study the following graph and answer the question that follows.
Production and Export of Wheat by Country ABC from 2016 to 2020 (in million tonnes)
| Year | 2016 | 2017 | 2018 | 2019 | 2020 |
| Production | 400 | 550 | 500 | 600 | 650 |
| Export | 300 | 400 | 375 | 475 | 500 |
The average export (per year) of wheat in the years 2016, 2017 and 2020 is approximately what percentage less than the average production (per years) of wheat in the years 2018 and 2019?
1
27.3
2
37.5
3
24.6
4
25.8