Various estimates have been made of the scale of investment required by those countries. One conservative estimate – which has a reasonable chance of being accepted precisely because it is conservative – calls for $50 billion per year as of 2015, increasing to $100 billion by 2020 and beyond.
人们对上述国家所要求的投资规模做出了各种猜想。一种保守的估计提出到2015年前每年投资500亿美元，到2020年及以后则增加到1000亿美元——这一提案之所以有可能被采纳也正是因为它比较保守。2010－2015年间将实行过渡性融资计划。