Based on the scenario stated above, ever since 1993, sea level rise has been happening at a rate of around three millimeters per year. If in 2021 the Philippines sea level rises around 4 millimeters, in 2022 it rises by 7 millimeters, in 2023 by 10 millimeters, by 2024 by 13 millimeters. In what year will the sea level rise by 40 millimeters?
