How many keys tall is the average Australian man?

That is, if you stacked up computer keys on top of each other lengthwise, how many keys would you need?
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My Laptop has 79 keys of various sizes, totaling about 230 cm, or 2.9 cm per average key.
If an average Australian is 180 cm tall, that gives 180/2.9 = 62 keys. If we only consider the “regular” keys with just letters or numbers as opposed to things like space bars , shift keys etc. it would be about 70 keys. If the average man is less than 180 cm the number would be proportionally less.
It turns out a standard key is about 1.9cm, so the average Australian man is about 93 keys tall.