I have a bar graph plotting

Weighting
100% 90% 70% 20% 10% 9% 1% Grand Total
Pipeline 2 21 19 39 4 1 10 96


I would like to centre all the bars (the length of the bar shows the
size/amount) so I want to take those bars, centre it and then connect all the
ends so that it forms a solid object.

Is that possible? I will be using it to show a pipe-like or funnel-like
object.

thanks