based on the two charts given, why did the British government feel it was issue more taxes on the colonies's

I don’t know what charts u mean, but one of the the reasons were they needed money to repair the economic damage done by the French and Indian war

The Virginia Plan (also known as the Randolph Plan, after its sponsor, or the Large-State Plan) was a proposal by Virginia delegates for a bicameral legislative branch. The plan was drafted by James Madison while he waited for a quorum to assemble at the Constitutional Convention of 1787.