Both state and private debt increase over time without defaults. It's the nature of broad money.
https://www.bankofengland.co.uk/-/media/boe/files/quarterly-bulletin/2014/money-creation-in-the-modern-economy.pdf ⬅️ this describes the creation and destruction of broad money, but doesn't show the cumulative effect of interest. This does https://www.imf.org/external/pubs/ft/wp/2012/wp12202.pdf
This is similar, and was produced in Iceland after 2008 https://bsd.wpenginepowered.com/wp-content/uploads/2015/04/monetary-reform-Iceland.pdf