Looking for datasets that highlight fiat’s decline compared to Bitcoin

I want to expand the BTC vs. Fiat comparisons on our tools kit, and I'd need to find historical price data for goods/services in various currencies (Yuan, Euro, Pounds, Rubles, etc.)

I want to prove with data & facts that anything priced in BTC goes down, the same item priced in Fiat goes up due to inflation & currency debasement.

To do so, I need datasets showing the yearly average price of a good/service from 2008 until 2024 (or similar). No indexes, CPI, etc, but actual average prices across years.

For example, think about: the average yearly cost of a new house; average yearly cost of child care service; average yearly cost of a full tank of gasoline; average yearly cost of a new car; etc etc.

Ideally, data must come from sources, such as government authorities, institutional research institutes, research/statistic firms, or reliable websites like Statista or similar.

If you know where to find such type of data source, please share the link with me (it will be included in the tool).

Thank you in advance for your time!

Ps: for context, storeofvalue.net