| year | duration | country | project location |
| 2017 | 8 weeks | Kenya, Ethiopia, South Africa, Nepal, Myanmar | Nairobi, Addis Ababa, Johannesburg, Kathmandu, Yangon |
| 2016 | 8 weeks | Ecuador, Indonesia, India, South Africa | Quito, Yogyakarta, Chennai, Johannesburg |
| 2015 | 8 weeks | India, South Africa, Egypt | New Delhi, Johannesburg, Cairo |
| 2014 | 4 weeks | South Africa | Johannesburg |
| 2013 | 4 weeks | South Africa | Cape Town, Pietermaritzburg |
| 2012 | 4 weeks | India | Hyderabad, New Delhi |
| 2012 | 4 weeks | South Africa | Cape Town, Johannesburg |
| 2009 | 4 weeks | Africa | Nairobi, Douala |
| 2010 | 3 weeks | India | Hyderabad |
| 2011 | 2 weeks | Kenya | Nairobi |
| 2010 | 2 weeks | Africa | Nairobi, Cape Town |
| 2007 | 3 weeks | India | Hyderabad, Chandigarh |
| 2007 | 2 weeks | Brazil | São Paulo |
| 2006 | 2 weeks | India | Hyderabad, Mumbai |
| 2005 | 2 weeks | South Africa | Johannesburg, Cape Town |
| 2005 | 2 weeks | India | Hyderabad |
| 2005 | 1 month | Indonesia / Sri Lanka | Aceh and Batticaloa |
| 2004 | 1,5 months | Indonesia | Jakarta |
| 2003 | 1,5 months | Braz./Arg/Cl | Curitiba, Buenos Aires, Santiago |
| 2002 | 2 weeks | Indonesia | Jakarta |
| 2003 |
1 month | China | Shanghai |
| 2003 |
1 month | El Salvador | San Salvador |
| 2001 |
2 months | Turkey | Izmit, Sinasos |
| 2002 |
1 month | India | Mumbai |
| 2000 |
1 month | Vietnam/Cambodia | Hanoi, Saigon |
| 1995 | 6 months | USA | East Harlem, N.Y. |
