Not per capita. Illegal immigration has lowered our standard of living quite a bit since 1980.
Top 10 Countries with highest Standard of Living in the World (2020)
10. Iceland and New Zealand — 88.45
9. United Kingdom — 88.58.
8. Netherlands — 88.65.
7. Norway — 88.70.
6. Sweden — 88.80.
5. Switzerland — 88.87.
4. Australia — 89.13.
3. Denmark — 89.39.
2. Canada — 89.49.
1. Finland — 90.09.
USA is 13.
https://finance.yahoo.com/news/15-countries-highest-standard-living-013358814.html
That list includes things like social equity as part of standard of living.
If you look at real quality of life items like house size, number and quality of cars, number of vacations etc. the average American beats everyone except for a handful of micro nations.