In the 2011 census of Scotland, 57,375 people (1.1% of the Scottish population aged over 3 years old) reported as able to speak Gaelic, 1,275 fewer than in 2001. The highest percentages of Gaelic speakers were in the Outer Hebrides. Nevertheless, there are revival efforts, and the number of speakers of the language under age 20 did not decrease between the 2001 and 2011 censuses. Outside Scotland, a dialect known as Canadian Gaelic has been spoken in eastern Canada since the 18th century. In the 2016 national census, nearly 4,000 Canadian residents claimed knowledge of Scottish Gaelic, with a particular concentration in Nova Scotia.