Eager to show it can function, the new Republican majority in the Senate has cracked open a window for legislation.

But in the first 100 days of the 114th Congress, the pattern of previous gridlocked Congress hasn’t essentially changed despite a few glimmers of cooperation and compromise on trade pacts and Medicare reform.

A review of congressional data from Quorum, a legislative tracking site, shows that compared with the openings of previous Congresses, the current Senate has seen a drop in the average number of co-sponsors per bill and the lowest level of Democratic cosponsorship in 20 years. As one would expect, there was a sharp increase in bills introduced by Republicans.