Poor-Rich Divide: GINI

GINI
0.459 in 2012 (Singapore)
(without govt. help: 0.478)
=>
Income of household at top 10% was 9.14 times that of the bottom 10% (after tax and transfer by government, becomes 7.87x)

OECD Method 1: (0.457)
First adult in family:1 point
Each additional adult 0.5 point
Each child 0.3 point
GINI = household income / sum of points

OECD Method 2:
GINI = square root of family size = 0.435

Note: Worsening GINI
GINI for USA : 0.43 (1990) to 0.47 (2010)
GINI for China: 0.35 (1990) to 0.47 (2010)
GINI for Singapore: 0.43 (1990) to 0.46 (2010)