1 person who is between 90 and 99. In the 2007 federal election the most popular party was the SVP which received 54.7% of the vote. The next three most popular parties were the SP (20.3%), the FDP (14.2%) and the CVP (5.2%). In Tenna about 74.4% of the population (between age 25–64) have completed either non-mandatory upper secondary education or additional higher education (either university or a Fachhochschule). Tenna has an unemployment rate of 0%. , there were 38 people employed in the primary economic sector and about 12 businesses involved in this sector. No one is employed in the secondary sector and there are no businesses in this sector. 8 people are employed in the tertiary sector, with 4 businesses in this sector. The historical population is given in the following table: References Villages in Graubünden Former municipalities of Graubünden Safiental