using dictionarys in c#

using System;
using System.Collections.Generic;
using System.Linq;
using System.Text;
using System.Threading.Tasks;

namespace ConsoleApp8
{
    class Program
    {
        static void Main(string[] args)
        {
            Dictionary<string, int> students = new Dictionary<string, int>();
            students.Add("Brian", 23);
            students.Add("Dillon", 22);
            students.Add("Matt", 23);
            students.Add("Colin", 22);
            students.Add("Barry", 25);
            students.Add("Sean", 25);
            students.Add("Kevin", 25);

            foreach (KeyValuePair<string, int> student in students)
            {
                Console.WriteLine(student.Value);
            }
            Console.ReadLine();
        }
    }
}