36 \ Global Youth Development Index and Report 2016 Table 2.5  Average scores by YDI category for the YDI indicators, 2015 YDI indicator Indicator description Average score by YDI category Low Medium High Very high Existence of account at a financial institution Percentage of 15–24-year-olds with an account at a formal financial institution 12 35 39 73 Adolescent fertility rate Births per 1,000 female 15–19-year-olds 98 53 37 18 Alcohol abuse rate YLL due to alcohol abuse per 100,000 of 15–29-year-olds 69 89 34 23 Digital native rate Percentage of 15–24-year-olds with five years or more experience of using the internet 7 21 38 75 Drug abuse rate YLL due to drug abuse per 100,000 of 15–29-year-olds 187 181 108 177 Enrolment in secondary education Total (gross) enrolment in secondary education, any age, as percentage of population of official secondary education age 44 73 92 106 Existence of a youth policy All ages, 1 = existing youth policy, 0.5 = youth policy in development or draft, 0 = no youth policy 0.5 0.7 0.7 0.8 Score on Global Well-being Index Gallup weighted score of well-being of five domains – purpose, social, financial, community and physical – among 15–29-year-olds 0.1 0.2 0.3 0.3 Helped a stranger Percentage 15–29 year olds answering ‘yes’ to questions on helping a stranger 48 50 48 58 HIV rate Percentage of 15–24-year-olds infected with HIV 1.6 0.7 0.2 0.2 Literacy rate Percentage of 15–24-year-olds who can both read and write with understanding a short simple statement on everyday life 73 92 98 99 Mental disorder rate YLL due to mental disorder per 100,000 of 15–29-year-olds 653 725 690 640 NEET rate Percentage of 15–29 year olds who are NEET 22 22 22 14 Voiced opinion to official Percentage 15–29-year-olds answering ‘yes’ to questions on expressing political views 18 14 17 20 Volunteered time Percentage 15–29-year-olds answering ‘yes’ to questions on volunteering 16 20 22 26 Existence of voter education conducted nationally All ages, 1 = continuously, 0.5 = election time only, 0.25 = other, 0 = no information or not applicable 0.5 0.5 0.5 0.6 Youth mortality rate Mortality rate per 100,000 of 15–29-year-olds 300 170 103 61 Youth unemployment ratio Ratio of youth (aged 15–24) unemployment rate to adult unemployment rate, both sexes 2.6 3.1 3.4 3.3