Australians getting richer: Credit Suisse Australians getting richer: Credit Suisse Australia has risen to the highest median level of wealth out of any developed country, according to new research from the global investment bank. A Credit Suisse’s Global Wealth Report found that the median wealth per adult in Australia was US$238,070, compared to US$173,770 in Hong Kong and US$171,620 in New Zealand. Belgium was the second-wealthiest country by median figures, with US$230,550 in wealth per adult. Australia was also high up in the average wealth figures at US$483,760 per adult, behind the US on US$505,420, Hong Kong at US$503,340 and Switzerland on US$673,960. Australia also recorded the second-highest increase in average wealth per adult at US$65,700.