It is a major topic of interest during the covid pandemic to analyse excess mortality. And it is particularly helpful to look at weekly death counts as the resulting year-year comparisons of weekly data provide rich information about the variability of deaths rates across seasons and years.
The USA's CDC provide such data from at least 2015 to the end of 2020 and this make identifying excess mortality related to covid a breeze. See this analysis, for example:
But how many other countries provide weekly mortality stats?
Note the CDC provide the stats with several levels of detail (in the case above by age group). But weekly totals even without the extra breakdowns would be useful. The UK's ONS recently released some weekly stats for 2020 but this didn't seem to have the equivalent weekly totals for previous years when I investigated the equivalent files.