After 1942, the number of prisoners regularly held at the camp continued to exceed 12,000. Dachau originally held Communists, leading Socialists and other "enemies of the state" in 1933, but over time the Nazis began to send German Jews to the camp. In the early years of imprisonment, Jews were offered permission to emigrate overseas if they "voluntarily" gave their property to enhance Hitler's public treasury. Once Austria was annexed and Czechoslovakia was dissolved, the citizens of both countries became the next prisoners at Dachau. In 1940, Dachau became filled with Polish prisoners, who constituted the majority of the prisoner population until Dachau was officially liberated.