The Netherlands became the first country with a AAA credit rating to sell green bonds, attracting strong appetite from investors.

The Netherlands raised €5.99 billion from the sale of its 20-year green bond, which attracted €21.2 billion in orders, according to the Dutch State Treasury Agency.

The bond has an annual coupon of 0.50% and will mature Jan. 15, 2040.

The Dutch agency plans to increase the overall bond amount to approximately €10 billion in the coming years.

Separately, Hong Kong raised US$1 billion from its inaugural green bond issuance that attracted more than US$4 billion, according to the Hong Kong Monetary Authority.

The U.S. dollar-denominated bond bears a coupon of 2.555% and has a tenor of five years.