"Throughout the 1980s and 1990s, the proportion of private sector households stayed steady at around 10%.
After all, large corporations only account for a tiny proportion of private sector employment worldwide.
At the same time, the proportion of private renters in work and claiming housing benefit increased from 14% to 18%.
Only a small proportion of private renters are students and people in their early 20s living in a shared household.
(Iraq is the most clear, and awful, example: a war that started with a far greater proportion of private security contractors than ever before, now outnumbering soldiers).
The ISC survey also reveals that, not only do men make up a greater proportion of private school teachers, their careers also appear to propel them further.
In slump or even semi-slump conditions, a higher-than-normal proportion of private savings are held in cash or its nearest equivalent - short-term Treasury bills.
Yet Paul Cottrell, UCU's head of policy, suspects the new group of successful bidders will include a higher-than-ever proportion of private providers.
However, in 2007 the proportion of private and grammar school pupils taking the exam was even higher, although the number of entries for the exam was also higher.
And as the proportion of private companies grows, there's less information flowing into the financial ecosystem, reducing the market's overall transparency, Stein says.
1.43pm: This is interesting data from 2007 showing the 20 councils with the highest proportion of housing benefit recipients as a proportion of private renters.
