Exact population: 84,402,966 (July 2006 est.) Literacy: Total population: 90.3%; male: 93.9%; female: 86.9% Ethnicities: Kinh (Viet) 86.2%, Tay 1.9%, Thai 1.7%, Muong 1.5%, Khome 1.4%, Hoa 1.1%, Nun 1.1%, Hmong 1%, others 4.1% (1999 census) Land boundaries: Total: 4,639 km; border countries: Cambodia 1,228 km, China 1,281 km, Laos 2,130 km Terrain: Low, flat delta in south and north; central highlands; hilly, mountainous in far north and northwest Extremes: Lowest point: South China Sea 0 m; highest point: Fan Si Pan 3,144 m Imports: China 13.7%, Taiwan 11.3%, South Korea 10.8%, Japan 10.5%, Singapore 10.5%, Thailand 6.2%, Hong Kong 4% (2004) Exports: US 20.2%, Japan 13.6%, China 9%, Australia 7%, Germany 5.9%, Singapore 4.8%, UK 4.6% (2004) Industries: Food processing, garments, shoes, machine-building, mining, cement, chemical fertilizer, glass, tires, oil, coal, steel, paper