the Education Sector. This move represented the first step towards a national approach to research and development across the university sector and the application of research for the purposes of national development. This policy was followed by the country's first National Science and Technology Master Plan 2014–2020. It was officially launched by the Ministry of Planning in December 2014, as the culmination of a two-year process supported by the Korea International Cooperation Agency. The plan makes provision for establishing a science and technology foundation to promote industrial innovation, with a particular focus on agriculture, primary industry and ICTs. Cambodia was ranked 109th in the Global Innovation Index in 2021, down from 98th in 2019. Energy Cambodia has high potential for developing renewable energy resources. Even though the country has not attracted much international investment in renewable energy by 2020, the country serves as a model to learn from for other ASEAN countries in terms of conducting solar power auctions. To attract more investment in renewable energy, the government could improve renewable energy governance, adopt clear targets, develop an effective regulatory framework, improve project bankability and facilitate market entry for international investors. Cambodia is highly vulnerable to the negative effects of climate change and it is advised that the country focuses more on developing renewable energy as part of climate change mitigation measures. Society Demographics The first official census conducted by the French protectorate of Cambodia was in 1921; however, only men aged 20 to 60 were counted as its purpose was for the collection of taxes. After the 1962 population census was conducted, Cambodia's civil conflicts and instability lead to a 36-year-long gap before the country could have another official census in 1998. At present, fifty percent of the Cambodian population is younger than 22 years old. At a 1.04 female to male ratio, Cambodia has the most female-biased sex ratio in the Greater Mekong Subregion. Among the Cambodian population aged over 65, the female to male ratio is 1.6:1. The total fertility rate in Cambodia was 2.5 children per woman in 2018. The fertility rate was 4.0 children in 2000. Women in urban areas have 2.2 children on average, compared with 3.3 children per woman in rural areas. Fertility is highest in Mondol Kiri and Rattanak Kiri Provinces, where women have an average of 4.5 children, and lowest in Phnom Penh where women have an average of 2.0 children.