For coloring map of GREECE :
You can use this sample statistics excel(.xls) file below.
Download the file and insert your statistical data to DATA coulumns.
You can change DATA1,DATA2... as data title you want.
Important Please don't change CITY and ID coulumns in the file
Upload your statistical data below
Places on the map : Attica, Central Greece, Central Macedonia, Crete, East Macedonia and Thrace, Epirus, Ionian Islands, Mount Athos, North Aegean, Peloponnese, South Aegean, Thessaly, West Greece, West Macedonia