the hundred-year period
a period of 100 years
"illustrates" sounds better.
the Britain economy
However, in 2000, the figure for this sector was by far the highest at 35 percent.
"However" is the wrong word here.
As can be seen clearly, the most striking feature of the chart is that there was a dramatic increase in business and financial through the period, rising from 4 percent in 1900 to just under 10 percent in 1950. However, in 2000, the figure for this sector was by far the highest at 35 percent.
I don't think a rise of 6 percent is dramatic. You could write another way: As can be seen clearly, the most.... rising from 4 percent to around 35 percent in 2000.
The number of agriculture
The proportion of
during which time the contribution of manufacturing just over doubled.
I don't understand what you mean here.
were the main contributors of UK economy