Sure it's good to keep things in perspective, but it's a very uncommon measure to use, and it doesn't really indicate that our growth was good, just that it wasn't as bad as the growth of other nations, who went through a far longer more protracted and deeper economic crisis than we did (which probably affected our growth rate as well).
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Minimum wage increases shouldn't affect the median.
I agree supply side economics don't work though, unless you're actually in an economy that lacks available investment capital. The US is lousy with massive surpluses in investment capital, though, and is far more in need of demand side growth.