The overall goal of the Green Bond market is to help mobilize private sector financing for sound climate- and environmentally-sustainable investments and help enhance transparency of environmental finance. The relevance of this market is growing rapidly – in 2014, issuances were over US$35 billion, more than three times higher than the US$11 billion issued the year before. The 2014 amount has been surpassed in 2015 to-date, with almost US$40 billion in new Green Bond issuance.