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 - 1.507 (2007),
1.5889 (2006), 1.6644 (2005), 1.6902 (2004), 1.7422 (2003)
Slovakia
Slovak koruny (SKK) per US dollar - 24.919 (2007), 29.611
(2006), 31.018 (2005), 32.257 (2004), 36.773 (2003)
Slovenia
euros (EUR) per US dollar - 0.7345 (2007), tolars per US
dollar - 190.85 (2006), 192.71 (2005), 192.38 (2004), 207.11 (2003)
note: Slovenia adopted the euro as its currency on 1 January 2007
Solomon Islands
Solomon Islands dollars (SBD) per US dollar - NA
(2007), 7.3447 (2006), 7.5299 (2005), 7.4847 (2004), 7.5059 (2003)
Somalia
Somali shillings (SOS) per US dollar - NA (2007), 1,438.3
(2006) official rate; the unofficial black market rate was about
23,000 shillings per dollar as of February 2007
note: the Republic of Somaliland, a self-declared independent
country not recognized by any foreign government, issues its own
currency, the Somaliland shilling
South Africa
rand (ZAR) per US dollar - 7.05 (2007), 6.7649 (2006),
6.3593 (2005), 6.4597 (2004), 7.5648 (2003)
Spain
euros (EUR) per US dollar - 0.7345 (2007), 0.7964 (2006),
0.8041 (2005), 0.8054 (2004), 0.886 (2003)
Sri Lanka
Sri Lankan rupees (LKR) per US dollar - 110.78 (2007),
103.99 (2006), 100.498 (2005), 101.194 (2004), 96.521 (2003)
Sudan
Sudanese pounds (SDG) per US dollar - 2.06 (2007), 2.172
(2006), 2.4361 (2005), 2.5791 (2004), 2.6098 (2003)
note: in October 2007 Sudan redenominated its currency by
transforming 100 units of Sudanese dinar into one unit of Sudanese
pound