Zester

lets I have a hash:

%hash=(
'2004' => "red",
'2006' => "blue",
'2005' => "green"
);

how do I sort it by key? i don't want to print it out sorted, only sort it

using this:
@keys = sort keys %hash;

will NOT work, because @keys now contain only the keys
why is it so fucking hard to get this:

%hash=(
'2004' => "red",
'2005' => "green",
'2006' => "blue"
);

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