Sources: For Greece mortality: https://countryeconomy.com/demography/mortality/greece. For Greece population https://countryeconomy.com/demography/population/greece. Similarly for Belgium. The data were obtained 04-Nov-2017.
The figures are ndexed 2008=100 with Loess smoothing applied. The index of deaths is volatile so data points are shown as well.
Notice the index is of number of deaths and not the death rate. Greece has endured very large emigration since the crisis - about 5% of the population. These will be mostly younger people so the balance of the population will have been changed so as to bias the death rate up, but emigration will not affect the actual number of deaths.