Write an article that answers the following question: How many in percent of people in Islay don't speak Gaelic?
Gaelic continues to decline in its traditional heartland. Between 2001 and 2011, the absolute number of Gaelic speakers fell sharply in the Western Isles (−1,745), Argyll & Bute (−694), and Highland (−634). The drop in Stornoway, the largest parish in the Western Isles by population, was especially acute, from 57.5% of the population in 1991 to 43.4% in 2011. The only parish outside the Western Isles over 40% Gaelic-speaking is Kilmuir, Skye in Northern Isle of Skye at 46%. The islands in the Inner Hebrides with significant percentages of Gaelic speakers are Tiree (38.3%), Raasay (30.4%), Skye (29.4%), Lismore, Scotland (26.9%), Colonsay (20.2%), and Islay (19.0%).