Middle Class: The 30-30-30 countries according to wealth distribution are primarily Germanic

The following are the countries with relatively equal sized lower, middle and upper classes in 2013, meaning roughly 30% have wealth under $10,000, roughly 30% have wealth $10,000 to $100,000, and roughly 30% have wealth in excess of $100,000 up to $1M:

USA: 31-33-31

Austria: 28-32-37

Germany: 29-33-35

New Zealand: 26-34-38

Qatar: 25-38-35

Taiwan: 23-45-31