CREATE TABLE table_29690 ("Currency" TEXT, "Country" TEXT, "Generic Name or Nickname" TEXT, "Rating  (  S&P / Moodys  ) " TEXT, "Negotiable debt at mid-2005  (  US dollar bn equivalent ) " FLOAT, "Government financial liabilities as % of GDP  ( end 2003 - source : OECD  ) " TEXT, "Issuer" TEXT, "Internet site" TEXT)

Name the number of countries that have the us dollar
SELECT COUNT("Country") FROM table_29690 WHERE "Currency" = 'US dollar'
SELECT COUNT("Country") FROM "table_29690" WHERE "Currency" = 'US dollar'