The principal industry in Dorset was once agriculture. It has not, however, been the largest employer since the mid 19th century as mechanisation substantially reduced the number of workers required. Agriculture has become less profitable and the industry has declined further. Within the administrative county between 1995 and 2003, GVA for primary industry (largely agriculture, fishing and quarrying) declined from £229 million to £188 million—7.1% to 4.0%. In 2007, of the county was in agricultural use, up from in 1989, although this was due to an increase in permanent grass, and land set aside. By contrast, in the same period, arable land decreased from . Excluding fowl, sheep are the most common animal stock in the county; between 1989 and 2006 their numbers fell from 252,189 to 193,500. Cattle and pig farming has declined similarly; during the same period the number of cattle fell from 240,413 to 170,700, and pigs from 169,636 to 72,700.