African immigrants to Switzerland include Swiss residents, both Swiss citizens and foreign nationals, who have migrated to Switzerland from Africa. The number has quintupled over the period of 1980 to 2007, with an average growth rate of 6% per annum (doubling time 12 years). According to official Swiss population statistics, 73,553 foreigners with African nationality lived in Switzerland as of 2009 (0.9% of total population, or 4.3% of resident foreigners — this data excludes immigrants with African ancestry coming from other parts of the world: Dominican Republic, Brazil, United States, Cuba etc.). Since the census records nationality, not ethnic origin, there is no official estimate of the number of naturalized Swiss citizens from Africa.