I like this graphic from The Economist as not only does it display the significant increase in inequality but also the changes in economic systems that were prevalent during the time period. Notice after 1930 the drop in the income levels of the top 10% and 1% earners. This can be partly explained by a return to a more dominant role of government. However after 1980 we see the impact of Reagan and Thatcher and the policy of less government and deregulation. This was especially evident with the repeal of the Glass Steagal Act in the US and Big Bang in the City of London.
Some key statistics from The Economist:
The top 10% of American earners brought in 46% of the nation’s salary income in 2007.
2007 – 2009 the inflation-adjusted income of the bottom 99% dropped by 11.6
2007 – 2009 the inflation-adjusted income of the top 1% dropped by 36.3%
However since 2009:
Top 1% of earners income has increased by 11.6% – bailout packages and bonuses?
The other 99% of earners income has increased by just 0.2%.
Obama intends to tackle this problem with increasing the top marginal tax rate to 39.6% of the late 1990’s. Between 1932 and 1944 the tax rate on top incomes rose from 25% to 94%. I think there is little chance of that happening especially with the impending election.