Poland
36 (2005)

Portugal
38.5 (2007)

Romania
31 (2005)

Russia
41.3 (September 2007)

Rwanda
46.8 (2000)

Senegal
41.3 (2001)

Serbia
30 (2003)

Sierra Leone
62.9 (1989)

Singapore
52.2 (2005)

Slovakia
26 (2005)