Why does this program that generates random numbers keep generating numbers in the hundreds?

I have a really simple question on arrays. I've been watching some tutorials and couldn't understand why the code below gives Frequency outputs as random combinations of 1**. It never gives numbers like 5, 67, 541 etc., it always gives something like 150, 175, 183 etc. I hope I made myself clear. Thanks alot!

Code:

    Random rand = new Random();
    int freq[] = new int[7];

    for(int roll=1; roll<=1000; roll++){

        ++freq[1+rand.nextInt(6)];
    }

    System.out.println("Face\tFrequency");

    for(int face=1; face<freq.length; face++){
            System.out.println(face + "\t" + freq[face]);
    }

Sample Output:

Face       Frequency

1        176

2        171

3        157

4        159

5        164

6        173