Update ISO.csv

[sim55649]

I've prepared this pull request where I report the following updates on the values taken from the https://www.worldbank.org dataset:

• Updating of population data by taking them from the dataset (greater coverage of data consistent with the subsequent indicators inserted)
• Indicator relating to% of the female gender out of the total population
• Indicator relating to% of female smokers
• Indicator relating to% of male smokers

Since some of these data refer to the year 2016, I have left this aspect indicated in the column.

If it should be all right I can move on to editing the _src file.

[eguidotti]

Thanks! I have cleaned the column names and noticed that country names containing commas were changed. Fixed.

Please add to the _src.csv the source of the data (at the very bottom of the file you can find examples). For data with mixed years you can write there eg 2016-2018 (column year).

[eguidotti]

Excellent work! Thank you!