Romansh language Urmein, which were still Romansh-speaking in the 17th century, had lost their Romansh majority by 1860, and are not included in this definition. This historical definition of the language area has been taken up in many subsequent publications, but the Swiss Federal Statistical Office for instance defines the language area of Romansh as those municipalities, where a majority declared to habitually use Romansh in the census of 2000. The presence of Romansh within its traditional language area varies from region to region. In 2000, 66 municipalities still had a Romansh majority, an additional 32 had at least 20% who declared
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