with 197 multi-purpose buildings that were mostly used for housing (8.5%) and 135 other use buildings (commercial or industrial) that also had some housing (5.8%). Of the single family homes 143 were built before 1919, while 161 were built between 1990 and 2000. The greatest number of single family homes (268) were built between 1919 and 1945. there were 6,910 apartments in the municipality. The most common apartment size was 3 rooms of which there were 2,404. There were 307 single room apartments and 1,298 apartments with five or more rooms. Of these apartments, a total of 6,349 apartments (91.9% of the total) were permanently occupied, while 374 apartments (5.4%) were seasonally occupied and 187 apartments (2.7%) were empty. , the construction rate of new housing units was 2.6 new units per 1000 residents. the average price to rent a two-room apartment was about 765.00 CHF (US$610, £340, €490), a three-room apartment was about 881.00 CHF (US$700, £400, €560) and a four-room apartment cost an average of 1118.00 CHF (US$890, £500, €720). The vacancy rate for the municipality, , was 0.6%. The historical population is given in the following chart: Sights The entire village of Pratteln is designated as part of the Inventory of Swiss Heritage Sites. Politics In the 2007 federal election the most popular party was the SVP which received 30.83% of the vote. The next three most popular parties were the SP (28.54%), the FDP (15.63%) and the Green Party (13.89%). In the federal election, a total of 3,612 votes were cast, and the voter turnout was 44.8%. Economy , Pratteln had an unemployment rate of 3.57%. , there were 87 people employed in the primary economic sector and about 21 businesses involved in this sector. 2,901 people were employed in the secondary sector and there were 146 businesses in this sector. 5,991 people were employed in the tertiary sector, with 543 businesses in this sector. There were 7,708 residents of the municipality who were employed in some capacity, of which females made up 43.7% of the workforce. the total number of full-time equivalent jobs was 9,236. The number of jobs in the primary sector was 36, of which 28 were in agriculture and 8 were in forestry or lumber production. The number of jobs in the secondary sector was 3,175, of which 1,984 or (62.5%) were in manufacturing, 102 or (3.2%) were in mining and 970