the area and the Auckland Regional Council into one "SuperCity" (Auckland Council), starting 1 November 2010. Coat of arms Demography Auckland City was the most populous local authority in the country, with a population of 450,300 at 30 June 2010. In 2010 it was made up of 188 ethnic groups, making it New Zealand's most diverse city, and slightly more diverse than in 2007, when 185 ethnic groups had been counted. In 2010, the life expectancy was 83 years for women, and 79.6 years for men, while the average age of the population was 33.4 years, with 35.9 years for the whole country. In 2009, Auckland was rated the fourth-best place to live in the world, in human resources consultancy Mercer's annual survey. Economy In the year to March 2009, Auckland City had 353,000 jobs, of which 26.3% was held by property and business services, as well as 65,655 businesses, making up 13.1% of New Zealand's businesses and 16.2% of New Zealand's jobs. Over 2009 to the month of March, Auckland City's unemployment rate increased to 5.6%, compared to the overall New Zealand unemployment rate of 4.5%. In addition the city's economic output declined by 2.4%. Gareth Stiven, the economic manager of Auckland City, stated that this was because the city's economy was heavily involved with service industries, such as banking and insurance, which were affected by financial crises. However, over the last five years of its existence, Auckland's economic growth averaged 1.4% each year, higher than the average of the region and the nation. In 2003 three of the ten largest companies in New Zealand (Air New Zealand, Fletcher Building, and Foodstuffs) were headquartered in Auckland City. Many large corporations were housed within Auckland CBD, the central part of Auckland City. Air New Zealand has its worldwide headquarters, called "The Hub", off Beaumont and Fanshawe Streets in the Western Reclamation; the airline moved there from the Auckland CBD in 2006. In September 2003 Air New Zealand was the only one of the very largest corporations in New Zealand to have its headquarters within the Auckland CBD. Suburbs These lists of suburbs are arranged electorally, by the wards, starting from the west. Avondale-Roskill: Avondale Blockhouse Bay Lynfield New Windsor Hillsborough Three Kings Waikowhai Mount Roskill Sandringham Wesley Eden-Albert: Balmoral Morningside Mount Albert Mount Eden Owairaka Kingsland Sandringham Waterview Western Bays: Grey Lynn Newton Western Springs Point Chevalier Westmere Ponsonby Herne