Question: In what year did the Majority Leader who appointed Nancy Erickson retire?

Context articles: Ronald Mariano
Party leaders of the Senate of Puerto Rico
Paul Policastro
Nigerian Senators of the 8th National Assembly
List of Majority Leaders of the Michigan Senate
Tracy Maxwell Heard
Harry Reid
Majority Leader (Cambodia)
Nancy Erickson
Floor Services Chief

Ronald Mariano (born October 31, 1946) is the majority leader of the Massachusetts House of Representatives.
 A Democrat from Quincy, he was first elected to the House in a December 1991 special election.
 He was appointed assistant majority leader in February 2009 and became majority leader in January 2011.
 He represents the 3rd Norfolk district.
The Senate of Puerto Rico Majority and Minority Leaders are Puerto Rican Senators who are elected by the party conferences that hold the majority and the minorities respectively.
 These leaders serve as the chief Senate spokespeople for their parties and manage and schedule the legislative and executive business of the Senate.
 By rule, the Presiding Officer gives the Majority Leader priority in obtaining recognition to speak on the floor of the Senate.
 The Majority Leader customarily serves as the chief representative of his or her party in Senate.
Paul Policastro (August 29, 1900 – November 4, 1981) was an American Democratic Party politician who served five terms in the New Jersey General Assembly.
 He was a graduate of Lafayette College and Rutgers Law School and served in the U.S. Army during World War II.
 He served on the Newark Board of Adjustment from 1953 to 1954.
 He first ran for the State Assembly in 1959, but lost.
 He ran again in 1961 and won.
 He was re-elected in 1963, 1965, 1967, and 1969.
 He served as Assistant Majority Leader in 1966 and as Majority Leader in 1967.
 Had Democrats not lost the majority in the 1967 election, Policastro was expected to become Assembly Speaker.
 In 1971, Policastro lost his bid for re-election to a fifth term, losing to an independent candidate, Newark vigilante leader Anthony Imperiale.
 Imperiale received 13,857 votes, followed by Policastro's running mate, incumbent Democratic Assemblyman Frank Megaro with 12,436 votes.
 Policastro ran third with 10,825 votes, followed by incumbent Republican Assemblyman C. Richard Fiore with 8,215 votes and Republican challenger Ralph D'Ambola with 7,351 votes.
The table below lists the Nigerian Senators of the 8th National Assembly.
 The Senate includes three senators from each of the 36 states, plus one senator for the Federal Capital Territory.
 The current Senate President is Sen. Bukola Saraki of the All Progressives Congress and the current Deputy Senate President is Ike Ekweremadu.
 The Senate President and his Deputy are also assisted by the Principal Officers including the Majority Leader, Deputy Majority Leader, Minority Leader, Deputy Minority Leader, Chief Whip, Deputy Chief Whip, Minority Whip and Deputy Minority Whip.
The Majority Leader of the Michigan Senate is the leader of the majority party in the upper chamber of the Michigan Legislature.
 Elected by the members of the majority caucus, the majority leader has the authority under the rules of the Senate to name members to committees, refer legislation to committee, and perform other duties required by the rules or by state law.
Tracy Maxwell Heard is the former Minority Leader of the Ohio House of Representatives, and previously served as the minority whip, assistant majority leader and as the majority leader.
 She is the first African-American woman, and one of two African-Americans, the other being William L. Mallory, Sr., to hold the office of majority leader.
Harry Mason Reid (born December 2, 1939) is a retired American politician who served as a United States Senator from Nevada from 1987 to 2017.
 He served as the leader of the Senate Democrats from 2005 to 2017 and as the Senate Majority Leader from 2007 to 2015.
The Majority Leader (Khmer: ប្រធានក្រុមភាគច្រើន ) is the leader of the parliamentary delegation of the largest party in the National Assembly of Cambodia.
 Though not directly the head of government, the Majority Leader acts as the leader of the members of parliament from the ruling party.
 It is similar to the Leader of the House of Commons in the Westminster system.
Nancy Erickson is the former Secretary of the United States Senate.
 She began her term as Secretary on January 4, 2007 in the 110th Congress.
 Erickson was appointed by Democratic and Majority Leader Harry Reid of Nevada.
 Prior to serving as Secretary of the Senate, Erickson served as the Democratic Representative to the Sergeant at Arms.
 She also served as the deputy chief of staff to former Senate majority leader Tom Daschle, (D) South Dakota.
 Erickson has a B.A. from Augustana College, and a M.A. from American University.
The Floor Services Chief is the title of the staff member in the Speaker's or Majority Leader's office who runs the Majority cloakroom in the United States House of Representatives.
 The current Floor Services Chief is Timothy J. Harroun, appointed by Republican Speaker John Boehner.
 His predecessor is Barry K. Sullivan, who was appointed by Democratic Speaker Nancy Pelosi.
 Sullivan's predecessor was Harroun, who was appointed by Republican Speaker Dennis Hastert.
 When Harroun is Floor Services Chief, Sullivan is Minority Cloakroom Manager.
 Similarly, when Sullivan was Floor Services Chief, Harroun was Minority Cloakroom Manager.