Java: Mexico Population VS United States Population

//This program calculates the population of both the US and Mexico. It stops when the Mexican population reaches half of the amount of the US Population.
class Mexico_andUS_POP {
    public static void main(String[] args){
        Banner();
        int years=0;
        int mexico_population=130000000;
       //counter for counting hte number of years.
        int US_population=332000000;

       while(mexico_population<(US_population * 0.5)){
           mexico_population = (int) (mexico_population *1.0137);
           US_population =  (int) (US_population * 1.006);
           years+=1;
       }
       System.out.println("The population of Mexico will be half of the population of the US in: "+years+ " years");
    }
    public static void Banner(){
        System.out.println("Malachi Sor CS151 Homework 3");
    }
}