Plans to build a series of reservoirs in the valley of Andermatt, the Urseren, encountered fierce resistance by the locals in 1946 and were abandoned four years later. A huge reservoir was built instead in the next valley, the Göschenertal. Several avalanches, in particular in the winter of 1951 and 1975 have caused havoc in some residential areas of Andermatt, killing the inhabitants of the houses affected. By the 1930s the town's income from tourism had seriously declined, and many of the Ursental's hotels were abandoned or changed use. The Grand Hotel Bellevue, which was built by the aristocratic Müller family from neighbouring Hospental (who at one time or another owned many other hotels nearby including the Hotel Furkablick and Hotel Furka Passhöhe - as well as hotels in Flüelen, Alpnachstad, Herisau and Neuchâtel) was converted in the 1970s into apartments, but by 1990 had been abandoned and was demolished with explosives. By the turn of the 21st century, as an alternative to the expensive skiing resorts in the Grisons (Graubünden) at St Moritz and Gstaad, Andermatt's fortunes again revived and the town has seen considerable expansion and is currently undergoing much speculative building. Demographics Andermatt has a population (as of ) of . , 10.0% of the population was made up of foreign nationals. Over the last 10 years the population has decreased at a rate of -8.8%. Most of the population () speaks German (95.2%), with Portuguese being second most common (1.0%) and Italian being third (0.9%). the gender distribution of the population was 50.8% male and 49.2% female. In Andermatt about 75.2% of the population (between age 25-64) have completed either non-mandatory upper secondary education or additional higher education (either university or a Fachhochschule). Andermatt has an unemployment rate of 0.9%. , there were 51 people employed in the primary economic sector and about 22 businesses involved in this sector. 90 people are employed in the secondary sector and there are 13 businesses in this sector. 599 people are employed in the tertiary sector, with 78 businesses in this sector. Climate Between 1961 and 1990 Andermatt had an average of 147.3 days of rain per year and on average received of precipitation. The wettest month was April, with an average of of precipitation and an average of 14 days with precipitation. The month with the most days of precipitation was May, with an average of 14.1, but