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使用したデータセットは次の通りです。
★総務省が政府のオープンデータの利活用を促進するために公開した教育用標準データセットSSDSE（https://www.nstac.go.jp/SSDSE/）
★政府統計の総合窓口E-Stat（https://www.e-stat.go.jp/）から得た過去の人口統計
★国立社会保障・人口問題研究所が発表した日本の地域別将来推計人口（http://www.ipss.go.jp/pp-shicyoson/j/shicyoson18/t-page.asp）
参考文献
1）Johnson, K. M., Field, L. M., & Poston, D. L. (2015). More Deaths Than Births: Subnational Natural Decrease in Europe and the United States. Population and Development Review, 41(4), 651–680.
2）Reynaud, C., & Miccoli, S. (2018). Depopulation and the aging population: The relationship in Italian municipalities. Sustainability (Switzerland), 10(4).
Japan's population has been decreasing for seven straight years. There is, however, considerable heterogeneity in demographic changes among the 1700+ municipalities in Japan. These Tableau maps show *How often natural decrease in population has occurred in the last 17 years (Sheet 1), *How often social decrease in population has occurred in 2000-2016 (Sheet 2), *Whether the municipality experienced a natural decrease/increase and a total decrease/increase in 2016 (Sheet 3), *Total population projection for 2025 (based on the 2015 index value of 100, Sheet 4), *Total population projection for 2035 (Sheet 5), *Total population projection for 2045 (Sheet 6).
Update: Oct 1, 2018
(Keiko Ono)
