The main highlights include:
- Top decile of earnings has increased from 175 per cent of median in 1975 to 215 per cent in 2012.
- Gini coefficient (measuring inequality) has increased by 5 percentage points since 1981.
- Overall inequality and top shares fell from early 1950s to end of the 1970s.
- Poverty has been rising since 1981.
- The top gross income shares fell from 1921 to around 1980 and then began to rise, reaching pre-war levels before the 2007 crisis. The share in total wealth of the wealthiest 1% of the population dropped more than threefold from 1915 to the end of 1970s before rising again till the onset of 2007 crisis. However, the rise was not sufficient to return to pre-war levels of concentration..
- Rising inequality on all (observable) dimensions for past thirty years.
The website have been compiled by Anthony B Atkinson and Salvatore Morelli and are published as Atkinson and Morelli (2014). The online version of the Chartbook and the online data visualisations have been designed and constructed by Max Roser. The authors acknowledge support from the following institutions: Programme for Economic Modelling · Institute for New Economic Thinking – Oxford · Oxford Martin School
It is interesting to reflect on the implications. Most people would cite the loss of traditional jobs, with man’s output increasingly being replaced by machines and jobs being offshored to low cost countries. BUT this needs to be considered against recent research from the IMF that better educational attainment and greater investment in R&D is significant in US states achieving higher Total Factor Productivity.