Romansh language develop. During the 19th century the area where the language was spoken declined, but the Romansh speakers had a literary revival and started a language movement dedicated to halting the decline of the language. In the 2000 Swiss census, 35,095 people (of whom 27,038 live in the canton of Grisons) indicated Romansh as the language of "best command", and 61,815 as a "regularly spoken" language. In 2010, Switzerland switched to a yearly system of assessment that uses a combination of municipal citizen records and a limited number of surveys. Based on this yearly system, the number of people aged 15
Romansh language their regional variety. The cantonal government aimed to introduce Rumantsch Grischun as the sole language of instruction in Romansh schools by 2020. In early 2011, however, a group of opponents in the Surselva and the Engadine founded the association Pro Idioms, demanding the overturning of the government decision of 2003 and launching numerous local initiatives to return to the regional varieties as the language of instruction. In April 2011, Riein became the first municipality to vote to return to teaching in Sursilvan, followed by an additional 4 in December, and a further 10 in early 2012, including Val Müstair, which