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SUBMIT YOUR IDEAI enjoyed this one. Kudos!
Good challenge
I finally grasped the concept of splitting the stream, calculating a summary and then joining back to the original stream to filter out records! Only took me ~80 weekly challenges. But remember, never...cross...the...streams
Dan
Took me 40 minutes as I was not sure how to deal with countries that start reporting after 1997.
Wonders if there is a simpler way.