Each session (1 year) more than 50 bills are proposed.
Explanation:
In the senate for approving first the bill needs to be addressed in the president's desk then president after checking the conditions of the bill make some sorts of group who will justify the necessity of the bill before the public. Then how many numbers of member are in favor of that bill would be calculated.
After that presidential desk and the member of the house will combined decide about the approval of the bill. This processes are quite long and takes much time to take the form of full proved bill. So in one session means in one year more than 50 number of bills are proposed.