access to electricity agricultural land alternative and nuclear energy armed forces personnel birth rate carbon dioxide emissions (CO2) central government debt death rate democracy score electricity production from coal sources electricity production from hydroelectric sources electricity production from natural gas sources electricity production from nuclear sources electricity production from oil sources electricity production from renewable sources, excluding hydroelectric expense female population fertility rate forest area GDP greenhouse gas emissions (CO2, CH4, N2O, HFCs, PFCs, SF6) health expenditure health expenditure per capita hospital beds incidence of HIV individuals using the Internet inflation internally displaced persons, by conflict and violence land area life expectancy at birth male population median age methane emissions military expenditure net energy imports net migration nitrous oxide emissions population press freedom proportion of seats held by women in national parliaments renewable energy consumption rural land area rural population self-employed workers suicide mortality rate tax revenue unemployment urban land area urban population urban population living in areas where elevation is below 5 meters vulnerable employment countries