Prime Minister Syed Yusuf Raza Gilani on Wednesday lauded services of outgoing Deputy Chairman Senate Jan Muhammad Jamali for efficiently conducting legislative business of the Senate, which he said led to the enactment of historic amendments and legislation. The Prime Minister was talking to Jan Muhammad Jamali, who paid a farewell call on him, at the Prime Minister House here. Jamali appreciated the leadership of the Prime Minister for strengthening democracy in the country.