BeginPackage["Wikicode`Iodine`"]
Production::usage="Production[date] gives the annual world iodine production from the specified date."
Begin["`Private`"]
Production[from_Integer]:=Select[iodineData["Production"],DateDifference[{from},#[[1]]] >= 0&]
iodineData["Production"] =
MapAt[{Round@#} &, #, 1] & /@
Import["http://minerals.usgs.gov/ds/2005/140/ds140-iodin.xlsx"][[1,
38 ;; 89, {1, 9}]]
End[]
EndPackage[]
