https://www.e-stat.go.jp/stat-search/files?page=1&layout=datalist&toukei=00450011&tstat=000001028897&cycle=7&year=20180&month=0&tclass1=000001053058&tclass2=000001053061&tclass3=000001053069&stat_infid=000031881367&result_back=1

stat.sh

# 表
curl -s "https://www.e-stat.go.jp/stat-search/file-download?statInfId=000031881367&fileKind=1" | iconv -f sjis -t utf8 | tail -n +39 | cut -d ',' -f 1-3 | tr ',' ' ' | awk '{print($1, $2, $3, $3*100/$2)}' | awk 'BEGIN{print("年次", "届出総数", "〜19歳", "割合(%)")} {print $0}' | column -t -s ' '

# グラフ
curl -s "https://www.e-stat.go.jp/stat-search/file-download?statInfId=000031881367&fileKind=1" | iconv -f sjis -t utf8 | tail -n +39 | cut -d ',' -f 1-3 | tr ',' ' ' | awk '{print($1, $2, $3, $3*100/$2)}' | feedgnuplot --domain --lines --points  --title "marriage" --y2 2 --unset grid --terminal 'dumb 120,50' --exit --legend 0 "number, total" --legend 1 "number, women under 19" --legend 2 "percent, women under 19"