A unitary parliamentary constitutional republic, North Macedonia is a member of the UN, NATO, the Council of Europe, the World Bank, OSCE, CEFTA, BSEC and the WTO. Since 2005, it has also been a candidate for joining the European Union. North Macedonia is an upper-middle-income country and has undergone considerable economic reform since independence in developing an open economy. North Macedonia is a developing country, ranking 82nd on the Human Development Index, and provides a social security, universal health care system, and free primary and secondary education to its citizens.