The World Health Organization has published a major report in Nature magazine about excess mortality in 2020-2021. Luxembourg shows pretty impressive results.
To put it simply, the excess mortality rate estimates the depth of the crisis. According to the blood samples taken in Luxembourg, only 7.7% of its population was exposed to the virus. In neighboring Belgium, for example, the figure is 15.6%.
Fewer morbidity rates naturally led to fewer deaths, while overall existing death statistics were exceeding any previous modern numbers, during the pandemic.
What's interesting, is that the restrictions in the Grand Duchy were relatively mild, compared to, for example, Germany or France.