I looked at wiki and found only UK, USA, and Israel.
The USA has the highest jailed rate per capita.
wiki:
http://en.wikipedia.org/wiki/Private_prisonA private prison, jail, or detention center is a place in which individuals are physically confined or interned by a third party that is contracted by a local, state or federal government agency. Private prison companies typically enter into contractual agreements with local, state, or federal governments that commit prisoners and then pay a per diem or monthly rate for each prisoner confined in the facility.
Today, the privatization of prisons refers both to the takeover of existing public facilities by private operators and to the building and operation of new and additional prisons by for-profit prison companies.
More at link including sections about UK, USA, and Israel.
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We have a western society strongly influenced by neoliberalism, Calvanism, and social Darwinism that is amoral, cruel. and not sustainable however much the Nature and how many human lives are degraded and destroyed. The society dominates an unstable World; unstable in Nature, politics, and economics.