Data

U.S. Budget and Economic data

Office of Management and Budget, "Historical Tables," https://www.whitehouse.gov/omb/historical-tables/

Congressional Budget Office, "Budget and Economic Data", https://www.cbo.gov/data/budget-economic-data

American Politics

Brooking Institution, "Vital Statistics on Congress," https://www.brookings.edu/multi-chapter-report/vital-statistics-on-congress/

Housing Policy

Joint Center for Housing Studies of Harvard University, https://www.jchs.harvard.edu/

Japan

Special accounts guidebook (in Japanese)

https://www.mof.go.jp/policy/budget/topics/special_account/fy2021/index.html

Debt management report (in Japanese)

https://www.mof.go.jp/jgbs/publication/debt_management_report/2021/index.html