i dont know how to change the condition

so I was given this problem to do at home and instructed to only use loops.

Write a method double calcFutureSalary(double curretSalary, int year) that takes an initial salary of a person, a number of year. The method will calculate the salary after a certain number of years. If a worker works less than 3 years, the salary increase 3% each year. If a worker works equal more than 3 years but less than 10 years, the salary increase 5% each year. And if a worker works equal or more than 10 years. The salary increase 8% each year.

For example, if you want to check the salary after 12 years. The first 2 year the salary will be increased by 3%, then for year 3 to year 9, the salary increase 5%, and for year 10 to year 12, the salary increase 8%.

The thing is, I only know how to do a part of it. for example:

for(int i = 1; i <= year; i++) {
        currentSalary *= 1.03;
    }
        return currentSalary;

my Problem is I don't know how to change the condition using loops afterwards HELP PLEASE.