countries, where Islamic dietary laws and a lack of storage and refrigeration facilities favour live animals over imports of processed meat. About half of Australia's live cattle exports come from Western Australia. Resource sector growth in recent years has resulted in significant labour and skills shortages, leading to recent efforts by the state government to encourage interstate and overseas immigration. According to the 2006 census, the median individual income was A$500 per week in Western Australia (compared to A$466 in Australia as a whole). The median family income was A$1246 per week (compared to A$1171 for Australia). Recent growth has also contributed to significant rises in average property values in 2006, although values plateaued in 2007. Located south of Perth, the heavy industrial area of Kwinana had the nation's largest oil refinery with a capacity of 146,000 barrels of oil per day, producing most of the state's petrol and diesel. Kwinana also hosts alumina and nickel processing plants, port facilities for grain and other bulk exports, and support industries for mining and petroleum such as heavy and light engineering, and metal fabrication. Shipbuilding (e.g. Austal) and associated support industries are found at nearby Henderson, just north of Kwinana. Significant secondary industries include cement and building product manufacturing, flour milling, food processing, animal feed production, automotive body building and printing. Western Australia has a significant fishing industry. Products for local consumption and export include western rock lobsters, prawns, crabs, shark and tuna, as well as pearl fishing in the Kimberley region of the state. Processing is conducted along the west coast. Whaling was a key marine industry but ceased at Albany in 1978. Western Australia has the world's biggest plantations of both Indian sandalwood (northern WA) and Australian sandalwood (semi-arid regions), which are used to produce sandalwood oil and incense. The WA sandalwood industry provides about 40 per cent of the international sandalwood oil market. Tourism In recent years, tourism has grown in importance, with significant numbers of visitors to the state coming from the UK and Ireland (28%), other European countries (14%) Singapore (16%), Japan (10%) and Malaysia (8%). Revenue from tourism is a strong economic driver in many of the smaller population centres outside of Perth, especially in coastal locations. Tourism forms a major part of the Western Australian economy with 833,100 international visitors making up 12.8% of the total international tourism to Australia in the year ending March