Data taken from Country Risk data in Euromoney magazine, published in Mar-2000, Sep-2000, Mar-2001, Sep-2001, Mar-2002, Mar-2003, Sep-2004, Mar-2005, Mar-2006, Sep-2006, Sep-2007, Mar-2008, Sep-2008, Mar-2009, Sep-2009, Mar-2010, Mar-2011. Data are coefficients from linear regression fits per country. Chart was created using the 'rworldmap' package in R v. 2.13.0, and rendered using the 'Cairo' package
Own work
Bebber