gender_development_index
                        Gender Development Index (GDI)
gender_empowerment_measure
                        Gender Empowerment Measure (GEM)
gender_inequality_index
                        Gender Inequality Index (GII)
gender_pay_gap          Gender Pay Gap (GPG)
real_data_GDI           Original Data of GDI (Gender Development Index)
real_data_GEM           Original Data for Gender Empowerment Measure
                        (GEM)
real_data_GII           Original Data for Gender Inequality Index (GII)
real_data_GPG           Original Data for Gender Pay Gap (GPG)
