According to the Pension and Disability Insurance Institute, in 1991 the ratio between the average number of insured persons and the average number of pensioners was 2.08 to 1; in 2015 it was 1.37 to 1.
Po podatkih Zavoda za pokojninsko in invalidsko zavarovanje je bilo razmerje med povprečnim številom zavarovancev in povprečnim številom upokojencev v letu 19912,08 proti 1, v letu 2015 je bilo to razmerje 1,37 proti 1.