Demand in the Green Bond market has historically been driven largely by environmentally and socially responsible investors. As the market becomes more mainstream, the investor base has expanded to include pension funds, insurance companies, asset managers and retail investors. With growth in the diversity of issuer type and structure, Green Bonds have developed into an asset class of their own providing fixed income products that meet investors' underlying financial requirements, and enable them to show support for initiatives they deem to be important global priorities.