The decline of Hungary's population that started in 1981 has also continued in recent years. According to the 2001 census, the population of Hungary was 10,198,000, about half a million less than the figure of twenty years earlier. By 2005 the population dropped to 10,077,000. The age pyramid of the Hungarian population is among the most irregular ones in Europe. On 1 January 2005, due to the extremely low number of live births in the preceding years the size of the 0-4-year-old population was smaller than the next age groups of five-year increments up to the age group 60-64. There are major differences in the size of the various generations.
The official language of instruction is Hungarian, but a number of ethnic and national minorities (e.g. German, Romanian, Slovene, Serb and Croatian) have minority educational institutions with their own languages as first or second language of instruction at primary and secondary level of teaching. According to the 2003 survey, the rate of Romani children in the population entering school education in 2008-2009 is expected to be around 15%.