Micronesians in the United States mostly hold low-paying, semi-skilled or unskilled jobs in service industries such as restaurants and hotels, in the construction industry, and in factories. Some have attained middle-level management positions, but very few hold professional jobs, even among the Guamanians who came to the United States in the 1950s and 1960s. Per capita income of Guamanians and other Micronesians in the United States is about 25 percent below the national average, according to 1980 census data. Lack of education and specialized training, recency of migration, and the low median age are the main factors in Micronesians' Marginal integration into the economy. Also, there is no cultural tradition of capital accumulation or mercantile Entrepreneurship in the Micronesian societies, and strong kinship pressure still exists for the sharing and redistribution of resources. Many Micronesians send money and material goods back to relatives at home and help finance the migration and education of other relatives.