2016 Global Youth Development Index: Results and Analysis Figure 2.10  Average YDI indicator scores for ten countries with the highest and lowest YDI scores, 2015 Global Well-Being Index Drug abuse YLL Mental disorder YLL Volunteered time Youth unemployment ratio Helped a stranger Voiced opinion to official Voter education NEET Account at a financial institution Existence of a youth policy Alcohol abuse YLL Digital natives HIV rate Adolescent fertility rate Youth mortality Literacy rate Enrolment in secondary education 0% 0.1 0.2 0.3 0.4 0.5 0.6 0.7 YDI indicator scores Less development Ten lowest-ranked countries 0.8 0.9 1 More development Ten highest-ranked countries Source: Commonwealth Secretariat for the digital native rate, holding an account at a financial institution, adolescent fertility rate, HIV rate and proportion enrolled in secondary school. These trends indicate that access to education, health services, financial inclusion and digital technology should be the top priority areas for policy focus in countries falling in a low YDI category. Notwithstanding the progressive improvement in most indicator scores across YDI categories, there are a few indicators where the higher the YDI category, the worse the indicator score. For example, the youth-to-adult unemployment ratio rises as one moves from the low to the very high YDI category. Similarly, countries in the high and medium YDI categories tend to have worse mental disorder scores than those in the low YDI category, though this, to some extent, can be attributed to the relatively poor quality of data collection in many low YDI countries. Moreover, countries falling in the \ 37