The 36,172 changes made in the 2009 edition of Volume 6, which includes countries of the world So-Z, brings the total this year to 274,129. "The exchange rate continues to be the catalyst for many of these changes. The market for stamps denominated in euros, British pounds, Canadian dollars and other various foreign currencies are largely made in the home countries, and anyone who wants to compete for those stamps must compete with those home-country buyers who are using their own strong currencies. This means that it will take more U.S. dollars to buy those stamps, and it will take more U.S. dollars for U.S. dealers to replenish their stocks," according to Scott Catalogue editor, James Kloetzel. Yugoslavia sees the most changes in this volume, with 3,201 value changes made. New values begin to appear with the general issues of 1921. The 1923 1d-30d King Alexander set of five, Scott 22-26, shows a big jump to $101.03 unused from $68.65 unused in the 2008 Volume 6. An even larger increase in value is seen in the 1928 1d-30d set of 10 overprinted semi-postals of 1926, Scott 53-62, which leaps to $246.50 unused and $14.85 used, from just $124 unused and $10.20 used last year. The back-of-the-book issues of Yugoslavia also see value increases, including the stamps of Ljubljana, Istria and Trieste. In South Africa, more than 3,000 value changes have been made, with most of the changes being fairly modest increases of 10 to 15 percent. The 1954 1/2p-10sh Animal set, Scott 200-213, is a good example of what South African stamps with a good topic have done over the past year. It rises to $40.00 mint never hinged and $8.90 used, from $35.45 mint never hinged and $8.05 used last year. Value changes in the self-governing Tribal Homelands issues also are numerous, with occasional value decreases but generally value advances. A new illustration has been added to the se-tenant English-Afrikaans pictorials of 1933-54, thus correcting a long-standing illustration error in the catalogue. The illustration should end the confusion felt by many concerning the 2p denominations of these popular stamps. Other countries with large numbers of value changes are Tanzania (2,322), Somalia (1,877), Wallis & Futuna Islands (1,683), Thailand (1,654), Turks & Caicos Islands (1,517), Sri Lanka (1,498), Virgin Islands (1,333), Solomon Islands (1,083) and Sudan (1,064). Other countries with significant numbers of value changes include Somali Coast, Trinidad & Tobago, Tristan da Cunha, Turkey, Uganda, Ukraine, United Arab Emirates, Uzbekistan, Vanuatu, South Vietnam, People s Democratic Republic of Yemen, Zambia and Zimbabwe. There is a new major number for Solomon Islands. Scott 884A is the 1991 7c Sweet Potato Weevil which was overprinted "China '99" in red in 1999 for the International Stamp Exhibition in Beijing. This stamp, valued at $1.75 both mint never hinged and used, was widely available from the Solomon Islands as well as at the exhibition, and as such merits a major Scott listing.