Ottawa already has the largest rural economy among Canada's major cities. In Ottawa, the rural economy contributes over $1 billion to the GDP. Agriculture alone accounts for $400 million, $136.7 million of which is farm-gate sales. Rural economic activity includes such things as agriculture, retail sales, construction, forestry and mining (aggregates), tourism, manufacturing, personal and business services, and transportation, to name a few. Rural employment expanded by a healthy 18% from 1996 to 2001.