The fall of communism in Bulgaria led to a reversal of the state's policy towards its citizens of Turkish descent. After the fall of Zhivkov in 1989, the National Assembly of Bulgaria passed laws to restore the cultural rights of the Turkish population. In 1991 a new law gave anyone affected by the name-changing campaign three years to officially restore original names and the names of children born after the name change. In January 1991, Turkish-language lessons were reintroduced as a non-compulsory subject for four hours per week if requested. According to the 2011 census in Bulgaria, there are 588,318 persons from the Turkish ethnic group or 8.8% of all ethnic groups, of whom 564,858 pointed Turkish as their mother tongue. Statistic results of the Address Based Population Registration System on the foreign-born population residing in Turkey from 2014 showed that 37.6% of a total of 992,597 foreign-born residents were born in Bulgaria, thus forming the largest foreign-born group in the country. The number of Bulgarian citizens from Turkish descent residing in Turkey is put at 326,000, during the 2005 Bulgarian parliamentary elections 120,000 voted either in Bulgaria or polling stations set up in Turkey.