The reason for this additional levy is that a few weeks ago the UK’s Office for National Statistics announced, proudly, that it had discovered that the country’s gross national income (GNI) had been much higher than previously assumed, not only in 2013, but also in all previous years. Including the revisions for the 2002-2012 period, the difference comes to about £350 billion ($560 billion).
这笔追加金的原因是，几周前英国国家统计局自豪地宣布，英国国民总收入（GNI）比此前估计的高出很多，不但2013年是如此，此前多年都是如此。在包括了2002—2012年的修正额后，这一差额大概在3,500亿英镑。