Jews should leave the country, emigration was problematic, as Jews were required to remit up to 90 per cent of their wealth as a tax upon leaving the country. Anyone caught transferring their money overseas was sentenced to lengthy terms in prison as "economic saboteurs". An exception was money sent to Palestine under the terms of the Haavara Agreement, whereby Jews could transfer some of their assets and emigrate to that country. Around 52,000 Jews emigrated to Palestine under the terms of this agreement between 1933 and 1939. By the start of the Second World War in 1939, around 250,000 of Germany's 437,000 Jews had emigrated to the United States, Palestine, Great Britain, and other countries. By 1938 it was becoming almost impossible for potential Jewish emigrants to find a country that would take them. After the 1936–39 Arab revolt, the British were disinclined to accept any more Jews into Palestine for fear it would further destabilise the region. Nationalistic and xenophobic people in other countries pressured their governments not to accept waves of Jewish immigrants, especially poverty-stricken ones. The Madagascar Plan, a proposed mass deportation of European Jews to Madagascar, proved to be impossible to carry out. Starting in mid-1941, the German government started mass exterminations of the Jews of Europe. The total number of Jews murdered during the resulting Holocaust is estimated at 5.5 to 6 million people. Estimates of the death toll of Romanis in the Porajmos range from 150,000 to 1,500,000. Legislation in other countries Some of the other Axis powers passed their own versions of the Nuremberg Laws. In 1938, Fascist Italy passed the Italian racial laws and Manifesto of Race which stripped Jews of their citizenship and forbade sexual relations and marriages between Jewish and non-Jewish Italians. Hungary passed laws on 28 May 1938 and 5 May 1939 banning Jews from various professions. A third law, added in August 1941, defined Jews as anyone with at least two Jewish grandparents, and forbade sexual relations or marriages between Jews and non-Jews. In 1940 the ruling Iron Guard in Romania passed the Law Defining the Legal Status of Romanian Jews. In 1941 the Codex Judaicus was enacted in Slovakia. In 1941 Bulgaria passed the Law for Protection of the Nation. In 1941, the Ustaše in Croatia passed legislation defining who was a Jew and restricting contact with them. While the Empire of Japan did not draft