運転免許統計 - SERP Analysis

https://www.npa.go.jp/publications/statistics/koutsuu/menkyo.html

https://www.npa.go.jp/publications/statistics/koutsuu/r06main.pdf

https://www8.cao.go.jp/koutu/taisaku/r06kou_haku/zenbun/genkyo/h1/h1b1s2_3.html

https://www.npa.go.jp/publications/statistics/koutsuu/menkyo/r04/r04_main.pdf

https://www.stat.go.jp/library/faq/faq25/faq25b07.html

https://data.e-gov.go.jp/data/dataset/npa_20200603_0046