The government of the Länder used foreign loands from 1924 to improve hospitals, schools, roads, building and electricity supplies. Article 155 of the constitution declared that the state must "strive to secure healthy housing to all German families, especially those with many children". Between 1924 and 1931 more than 2 million new homes were built, while almost 200,000 more were renovated or expanded. By 1928, homelessness had been reduced by more than 60%