| Year | Country | Income Level | HD Cost PPPY (EUR) | PD Cost PPPY (EUR) | KT Cost PPPY (EUR) |
| 2008 | Serbia | Upper-middle | 10 year average―16,533 | N/A | 10 year average―4895 |
| 2010 | Austria | High | 1st year―43,600 2nd year―40,000 >2nd year―40,600 | 1st year―25,900 2nd year―15,300 >2nd year―20,500 | 1st year―51,000 2nd year―17,200 >2nd year―12,900 |
| 2016 | Georgia | Lower-middle | Yearly―6765 | Yearly―13,600 | 1st year―12,670 From 2nd year―1835 |