37 Figure 4.7 Percentage of Population Aged 60 Years or Over for the World and Regions, 1980-2050 84 4.3.5 Exploration during adolescence (finding one’s own interests), then becoming an independent producer (creating jobs through entrepreneurship rather than finding jobs), then creating a combination of identities (portfolio people) can summarize how this generation adapts to changes in society and can reinvent themselves. 4.3.6 Alter conducted a comprehensive study about millennials in the US. According to the study, in addition to climate change which has been the most concerned issue by the millennium worldwide according to survey by the World Economic Forum, millennials in the US has three following concerns85. 35 30 25 20 15 10 5 0 1980 1990 2000 2010 2020 2030 2040 2050 Percentage aged 60 years over World Europe Northern America Oceania Latin America and the Caribbean Asia Africa 84 Source: United Nations (2015). World Population Prospects: The 2015 Revision. 85 Alter, C. (2020) The Ones We’ve Been Waiting for: How a New Generation of Leaders will Transform America, Viking. 4 Youthquake and Quarter-Life Crisis
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