and 1,036 individuals who are divorced. , there were 12,445 private households in the canton, and an average of 2.5 persons per household. There were 3,835 households that consist of only one person and 1,349 households with five or more people. , the construction rate of new housing units was 8.8 new units per 1000 residents. The vacancy rate for the canton, , was 0.8%. Historic population The historic population is given in the following chart: Municipalities There are seven municipalities: Sarnen, Kerns, Sachseln, Alpnach, Giswil, Lungern and Engelberg. The capital Sarnen is subdivided into Sarnen-Dorfschaft, Kägiswil, Schwendi/Wilen and Ramersberg. The autonomy of the municipalities in Obwalden is significant. Two thirds of the tax revenue flows to the municipalities, which for example pay for education without grants from the canton. Economy Small and middle-sized businesses dominate the economy of Obwalden. Many of them are specialists in areas such as miniature engines, synthetics, medical equipment, or nanotechnology. Traditional industries are still of great importance. Particularly forestry and related businesses are significant, as is agriculture. Agriculture in Obwalden is specialized in integrated dairy and meat farming. The farms are still family-run. In 2007 Obwalden replaced the former regressive income tax (lower tax rates for higher incomes) with a flat 1.8% income tax, which is the lowest in the country. This cantonal tax is in addition to federal and local taxes. , Obwalden had an unemployment rate of 1.5%. , there were 1,871 people employed in the primary economic sector and about 750 businesses involved in this sector. 6,499 people were employed in the secondary sector and there were 452 businesses in this sector. 10,037 people were employed in the tertiary sector, with 1,380 businesses in this sector. the total number of full-time equivalent jobs was 15,215. The number of jobs in the primary sector was 1,157, of which 1,052 were in agriculture and 105 were in forestry or lumber production. The number of jobs in the secondary sector was 6,008 of which 3,648 or (60.7%) were in manufacturing, 46 or (0.8%) were in mining and 2,139 (35.6%) were in construction. The number of jobs in the tertiary sector was 8,050. In the tertiary sector; 1,892 or 23.5% were in the sale or repair of motor vehicles, 520 or 6.5% were in the movement and storage of goods, 1,440 or 17.9% were in a hotel or restaurant, 140 or 1.7% were in the