Table 3 lists the countries in this group along with their exchange rate regimes; asterisks indicate changes in the exchange rate regime (including shifts among subcategories within the three major categories) between 1999 and 2006, with asterisked  BIS Review 141/2007  7  numbers in brackets indicating the number of countries in each of the seven categories in the table that were not in that category in 1999.
The economics literature has not yet developed a strong position on which exchange rate system developing countries should adopt. Frankel (1999 and 2004) and Mussa et al (2000) emphasize that "no single currency regime is right for all countries or at all times".