Provided a list of cities, country and year of opening/inaguration, create dynamic maps based on selected year.
Provide to the table a list of cities and year of opening/inauguration as if each line is one organization. Then click Get coords and once the script has finished (see the log below) click Make map. Once the map is shown you can slide the bar above it to select the year to visualize. You can select an example and Load it to see how it should look like.
NOTE: For now only one country per map is supported; you can erase everything using the button Remove and create anothermap (i.e. different country). Region also not working.