At present, there are two options to make our sovereign bond portfolio greener in a timely manner. One is to increase the share of bonds issued by supranational institutions and agencies. A considerably larger fraction of their outstanding bonds is already green (Slide 7).
Concerns about the effects of changes in portfolio preferences caused both the German and the Japanese governments to take measures to restrict the international uses of the deutsche mark and yen, respectively, during the 1970s and early 1980s.