一、住宅建设发展现状1.住宅建设投资量在世界各国经济发展中,住宅产业是国民经济中的一个重要行业。据联合国对世界70多个国家的调查,各国住宅建设投资占国内生产总值(GNP)的比例在3%～8%。日本在第二次世界大战后,随着经济的恢复和发展,住宅建设投资不断增长。50年代平均约为 I. Development Status of Residential Construction 1. Investment in Housing Construction In the economic development of all countries in the world, the housing industry is an important industry in the national economy. According to the UN survey of more than 70 countries in the world, the proportion of housing construction investment in various countries in the country’s gross domestic product (GNP) is between 3% and 8%. Japan After the Second World War, with the recovery and development of the economy, the investment in housing construction is constantly increasing. 50’s average is about