The mortgage debt load (in absolute terms) is also increasing. Non-mortgage debt tends to have higher rates.
Many with a mortgage in US are still paying 3% rates on a loan they got 5+ years ago for a 30-year term.
Many with credit card debt are paying 28% interest on a loan they built up in the last 5 years.
I imagine student loans are a big portion of "Other" in this chart.
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