Slovenia is among the European countries with the most pronounced ageing of its population, ascribable to a low birth rate and increasing life expectancy. Almost all Slovenian inhabitants older than 64 are retired, with no significant difference between the genders. The working-age group is diminishing in spite of immigration. The proposal to raise the retirement age from the current 57 for women and 58 for men was rejected in a referendum in 2011. In addition, the difference among the genders regarding life expectancy is still significant. The total fertility rate (TFR) in 2014 was estimated at 1.33 children born/woman, which is lower than the replacement rate of 2.1. The majority of children are born to unmarried women (in 2016, 58.6% of all births were outside of marriage).