In 2010, 2.3 million families with children under 18 years were living in Germany, in which at least one parent had foreign roots. They represented 29% of the total of 8.1 million families with minor children. Compared with 2005 – the year when the microcensus started to collect detailed information on the population with a migrant background – the proportion of migrant families has risen by 2 percentage points. In 2015, 36% children under 5 years old had migrant background.(number includes ethnic German repatriates)