more than doubled between 1960 and 1974. The increase was mostly in district or state offices; the percentage of congressional staff who worked in a district office went from 14% in 1960 to 34% in 1974. In the 1970s and 1990s, "staff numbers generally held level and increases were held down. After 1995, staff numbers actually decreased slightly." Types of staff members C-SPAN classifies staff members into five categories:Personal staff, who work for individual members of CongressCommittee staff, who serve either the majority or minority on congressional committeesLeadership staff, who work for the speaker, majority and minority leaders, and majority and minority whips in the House of Representatives, and the majority and minority leaders and assistant majority and minority leaders (whips) in the SenateInstitutional staff, including majority or minority party floor staff and non-partisan staff such as the Capitol Police, Architect of the Capitol (facilities and maintenance employees), and legislative clerks.Support agency staff, non-partisan employees of the Congressional Research Service (CRS), Congressional Budget Office (CBO), and Government Accountability Office (GAO). In the year 2000, there were approximately 11,692 personal staff, 2,492 committee staff, 274 leadership staff, 5,034 institutional staff, and 3,500 GAO employees, 747 CRS employees, and 232 CBO employees. Personal staff Budgets for staff were determined by the population of the state; Senators from California, the most populous state, get more money for staff than Senators from Wyoming, the least populous state. Members can choose how to distribute staff between their Washington office and their United States congressional district home office or offices. Not all offices have the same type of organization, and different titles may be used for substantially similar jobs. Common jobs are: Chief of staff: Highest-ranking and usually highest-paid legislative staffer in the office of a member of Congress, usually the chief operating officer of the office, reporting directly to the member. Oversees a dozen or more other employees. Some chiefs of staffs are charged with personnel decisions and policy initiatives. From time to time a chief of staff may be based out of a district office, but they are almost always found at the Capitol ("on the "Hill"). Chiefs of staff are usually very experienced political staffers, often with years of prior work on the Hill, or are personal friends of Members. Some chiefs of staff were previously campaign managers. Deputy chief of staff: Reports to the chief of staff. Legislative director (LD), senior legislative