I thought this was a little weird: "melanoma diagnosis increased by 1.9 percent annually between 2000 and 2009."

I would have thought that this would have went down through this period. I was born in 1973 and wore some sunscreen as a kid and I would assume the amount of sunscreen wearing has increased over time and sun exposure has decreased. Some time before that people were barely wearing sunscreen or limiting exposure so as they die out I would expect the melanoma rate to decrease.

Of course there would be a lot of compounding factors, like longer lifespans, a higher percentage of Americans living in the South, etc. Just seems a little odd.