Complex sentence: Since the late 1980s however, ongoing downscaling at Kinleith-and closing of other local industries-has resulted in a marked drop in population; census figures put the 2006 population at approximately 13,600.
Split into simpler sentences: Since the late 1980s ongoing downscaling at Kinleith-and closing of other local industries-has resulted in a marked drop in population. Census figures put the 2006 population at approximately 13,600.