Germany has one of the world's highest levels of education, technological development, and economic productivity. Since the end of World War II, the number of students entering university has more than tripled, and the trade and technical schools are among the world's best. With a per capita income of about €40,883 in 2018, Germany is a broadly middle-class society. However, there has been a strong increase in the number of children living in poverty. In 1965, one in 75 children was on the welfare rolls; but by 2007 this had increased to one child in six. These children live in relative poverty, but not necessarily in absolute poverty. Germans are typically well-travelled, with millions travelling overseas each year. The social welfare system provides for universal health care, unemployment compensation, child benefits and other social programmes. Germany's ageing population and struggling economy strained the welfare system in the 1990s, so the government adopted a wide-ranging programme of belt-tightening reforms, Agenda 2010, including the labour-market reforms known as Hartz concept.