precodata_all suma is incorrect at the aggreg all level because of incorrect weighted average
ratio bcurrent / b0 is computed in precoda_country in a specificy field ratio_bcurrent_b0 to account for only EMUs in which required data are available. But this field in not used in precodata_all (needs to create it for aggreg_level="all") and should then be used in preco_diagram.R (instead of bcurrent/b0 as x axis)