San Marino
euros (EUR) per US dollar - 0.6734 (2008 est.), 0.7345
(2007), 0.7964 (2006), 0.8041 (2005), 0.8054 (2004)

Sao Tome and Principe
dobras (STD) per US dollar - 14,900 (2008
est.), 13,700 (2007), 12,050 (2006), 9,900.4 (2005), 9,902.3 (2004)

Saudi Arabia
Saudi riyals (SAR) per US dollar - 3.75 (2008 est.),
3.745 (2007), 3.745 (2006), 3.747 (2005), 3.75 (2004)

Senegal
Communaute Financiere Africaine francs (XOF) per US dollar -
447.81 (2008 est.), 481.83 (2007), 522.89 (2006), 527.47 (2005),
528.29 (2004)
note: since 1 January 1999, the West African CFA franc (XOF) has
been pegged to the euro at a rate of 655.957 CFA francs per euro;
West African CFA franc (XOF) coins and banknotes are not accepted in
countries using Central African CFA francs (XAF), and vice versa,
even though the two currencies trade at par

Serbia
Serbian dinars (RSD) per US dollar - 54.5 (2007), 59.98 (2006)

Seychelles
Seychelles rupees (SCR) per US dollar - 8 (2008 est.),
6.5 (2007), 5.5 (2006), 5.5 (2005), 5.5 (2004)

Sierra Leone
leones (SLL) per US dollar - NA (2007), 2,961.7 (2006),
2,889.6 (2005), 2,701.3 (2004), 2,347.9 (2003)

Singapore
Singapore dollars (SGD) per US dollar - 1.415 (2008 est.),
1.507 (2007), 1.5889 (2006), 1.6644 (2005), 1.6902 (2004)

Slovakia
Slovak koruny (SKK) per US dollar - 21.05 (2008 est.),
24.919 (2007), 29.611 (2006), 31.018 (2005), 32.257 (2004)
note: on 1 January 2009 Slovakia adopted the euro as legal tender

Slovenia
euros (EUR) per US dollar - 0.6827 (2008 est.), 0.7345
(2007)
note: Slovenia adopted the euro as its currency on 1 January 2007