What percentage of total world population is England's population?

The latest available data on these statistics from the UK National Statistics Online indicate that in 2004 the UK's population was divided (rounded numbers) between the four countries as:

* 84% in England * 9% in Scotland * 5% in Wales * 3% in Northern Ireland

Projected trends for next 40 years:

* England's population will continue to rise, * Wales population will continue to rise but at a slower rate than England,

* Scotland's numbers declined in the 1990's but will rise to a peak in 2019 then fall,

* Northern Ireland will rise and peak in 2030 and then start to fall.