It would be interesting to know how country-level policies impact how individual respondents answer this question. For example, in the Netherlands there appears to be a mandatory retirement age of 67, which is probably why the expected retirement age is 66.9! That situation seems different than that of the US where respondents may be more likely to state their desired retirement age as their expected retirement age.
Similarly, that the US only had 30% of respondents say that they do not enjoy the same standard of living as when working seems quite low to me, on first glance. But there is likely selection bias going on here because the question is only asked of people with the means to retire, it doesn’t account for the people of retirement age who are still working out of necessity.
Overall, some interesting findings. Thanks for sharing!