Why does this python dictionary get created out of order using setdefault()?

I'm just starting to play around with Python (VBA background). Why does this dictionary get created out of order? Shouldn't it be a:1, b:2...etc.?

class Card:
def county(self):
    c = 0
    l = 0
    groupL = {}  # groupL for Loop
    for n in range(0,13):
        c += 1
        l = chr(n+97)
        groupL.setdefault(l,c)
    return groupL

pick_card = Card()
group = pick_card.county()
print group

here's the output:

{'a': 1, 'c': 3, 'b': 2, 'e': 5, 'd': 4, 'g': 7, 'f': 6, 'i': 9, 'h': 8, 'k': 11, 'j': 10, 'm': 13, 'l': 12}

or, does it just get printed out of order?