that were annexed by the Russian Federation in 2014, Ukraine consists of 27 regions: twenty-four oblasts (provinces), one autonomous republic (Autonomous Republic of Crimea), and two cities of special status—Kyiv, the capital, and Sevastopol. The 24 oblasts and Crimea are subdivided into 136 (districts) and city municipalities of regional significance, or second-level administrative units. Populated places in Ukraine are split into two categories: urban and rural. Urban populated places are split further into cities and urban-type settlements (a Soviet administrative invention), while rural populated places consist of villages and settlements (a generally used term). All cities have a certain degree of self-rule depending on their significance such as national significance (as in the case of Kyiv and Sevastopol), regional significance (within each oblast or autonomous republic) or district significance (all the rest of cities). A city's significance depends on several factors such as its population, socio-economic and historical importance and infrastructure. Economy In 2021 agriculture was the biggest sector of the economy and Ukraine is one of the world's largest wheat exporters. However, Ukraine remains among the poorest countries in Europe with the lowest nominal GDP per capita. corruption remained a widespread issue; the country was rated 122nd out of 180 in the Corruption Perceptions Index for 2021, the second-lowest result in Europe after Russia. In 2021, Ukraine's GDP per capita by purchasing power parity was just over $14,000. Despite supplying emergency financial support, the IMF expected the economy to shrink considerably by 35% in 2022 due to Russia's invasion. One 2022 estimate was that post-war reconstruction costs might reach half a trillion dollars. In 2021, the average salary in Ukraine reached its highest level at almost ₴14,300 (US$525) per month. About 1% of Ukrainians lived below the national poverty line in 2019. Unemployment in Ukraine was 4.5% in 2019. In 2019 5–15% of the Ukrainian population were categorized as middle class. In 2020 Ukraine's government debt was roughly 50% of its nominal GDP. In 2021 mineral commodities and light industry were important sectors. Ukraine produces nearly all types of transportation vehicles and spacecraft. Antonov airplanes and KrAZ trucks are exported to many countries. The European Union is the country's main trade partner, and remittances from Ukrainians working abroad are important. Agriculture Ukraine is among the world's top agricultural producers and exporters and is often described as the "bread basket of Europe". During the 2020/21 international wheat marketing season (July–June),