在过去的几年当中，这一点保持的相当稳定—浮动部分是由于英镑的疲软导致的—但是，如图表所示，在到2007年的十年间，(整体)趋势有一点的下滑。

For the past few years this has remained relatively constant—buoyed partly by the weak pound—but, as the chart shows, the trend over the decade to 2007 was slightly downward.

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决定浮动英镑的汇率，因为固定汇率不利于出口贸易。

It was decided to float the pound because a fixed value was damaging exports.

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