題組內容

（四）本題為英文試題，請回答以下兩個小題：
        Figure 2. shows the age groups of population ratio and dependency ratio changes in Taiwan. The four lines (randomly) are the young-age population ratio, the working-age population ratio, the old-age population ratio and the dependency ratio. The data after 2021 are medium population projection.
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1. Please indicate the year that Taiwan enter “demographic debt” period between 1960 and 2060. (2 marks)