International rankings of Iran

Columns: Name | Rank | Out of | Source | Notes | Year
Total area | 18 | 233 | United Nations | Area of 1,628,750 km ; or ~1.1% of World 's total area | 2010 | Deadliest earthquakes in history | 8 | World | List of natural disasters by death toll | 856 Damghan earthquake killed more than 200,000 people in Iran on December 22 , 856 | 856 | Countries by number of casualties from earthquakes | 2 | World | United Nations | Iran has the world 's second highest number of casualties due to earthquakes per one million residents . More info : The natural disasters risk index | 2010 | Number of major earthquakes | 1 | World | United Nations | Iran has the world 's highest number of major earthquakes . Tremors occur daily somewhere in the country . More info : online earthquake monitoring ( with GMT date & time stamp ) | 2010 | Number of billionaires | N/A | N/A | List of Iranian people by net worth | Iran has an estimated 3 million high net worth individuals , 32,000 individuals with a net worth of $ 3 million , 1,300 multimillionaires with net assets of $ 10 million or more and four billionaires ( living in Iran ) . See also : Social class in Iran and List of high net worth Iranians abroad | 2016 | World Giving Index | 86 | World | Charities Aid Foundation | Iran ranked 86th charitable nation worldwide with 35% of population having given money to charities , 38% of population having helped a stranger and only 12% having volunteered time . More info : World 's most charitable nations | 2010 | Intensity of natural background radiation | 1 | World | Natural background radiation at Ramsar | Highest natural radioactivity level in the world . Annual dose of 260 mSv . More info : Acute radiation syndrome and Ionizing radiation | 2010

Example questions:
Which list ranks people whose investible assets exceed a given amount ? | For the category with the lowest ranking , what is the measurement to categorize it by the source ? | Which source list the event which releases energy and creates seismic waves , come from ? | What was the magnitude of the event under the source which classifies things having profound environmental effects ?

Answers:
Number of billionaires | greater than 2,500 km2 | United Nations | 7.9