Question: Warren Truss continued as Deputy Prime Minister, until he retired in 2016 and was replaced by a politician born in which year ?
Context: A deputy prime minister or vice prime minister is, in some countries, a government minister who can take the position of acting prime minister when the prime minister is temporarily absent.  The position is often likened to that of a vice president, but is significantly different even though both positions are "number two" offices.  The position of deputy prime minister should not be confused with the Canadian Deputy Minister of the Prime Minister of Canada, a nonpolitical civil servant position.  Also, the Deputy Prime Minister of Canada does not act as a "number two". The Deputy Prime Minister of Croatia (officially the Vice President of the Government of the Republic of Croatia (Croatian: "Potpredsjednik/ Potpredsjednica Vlade Republike Hrvatske" )), is the official Deputy of the Prime Minister of Croatia.  Article 109 of the Constitution of Croatia states that the cabinet is to be made up of the Prime Minister, one or more Deputy Prime Ministers and other cabinet ministers.  According to convention, if the governing parliamentary majority is a coalition of parties, all junior partners in the coalition will usually be given one Deputy Prime Minister in the cabinet, with their rank usually being determined by the number of MPs the party has in Parliament.  The Deputy Prime Ministers are permitted to simultaneously hold a ministerial portfolio while in office, but may also serve without holding such a portfolio. The Turnbull Government is the federal executive government of Australia, led by the 29th Prime Minister of Australia, Malcolm Turnbull.  The government is made of members of the Liberal-National Coalition.  The prime ministership of Malcolm Turnbull commenced on 15 September 2015, when he was sworn in by the Governor-General of Australia.  The Turnbull Government succeeded the Abbott Government, which was elected at the 2013 federal election.  Turnbull took office by challenging the incumbent Liberal leader Tony Abbott in an internal leadership ballot.  Warren Truss, the leader of the Nationals continued as Deputy Prime Minister, until he retired in 2016 and was replaced by Barnaby Joyce. The Swedish constitution of 1974 allows the Prime Minister of Sweden to appoint one of the Ministers in the cabinet as Deputy Prime Minister ("biträdande statsminister", also unofficially known as "vice statsminister", "Vice Prime Minister"), in case the Prime Minister for some reason is prevented from performing his or her duties.  However, if a Deputy Prime Minister has not been appointed, the Minister in the cabinet who has served the longest time (and if there are several with equal experience the one who is oldest) takes over as head of government.  Note that the person acting as Prime Minister does not do so on a permanent basis: if a Prime Minister dies, resigns or loses a vote of confidence in the Riksdag, the Speaker of the Riksdag will then confer with the parties of the Riksdag and propose a new Prime Minister, who must be tolerated by a majority of the Riksdag.  If the Prime Minister has resigned or lost a vote of confidence, he or she will remain the head of a government "ad interim" until the new Prime Minister assumes his or her office.  The only case where the governmental line of succession becomes relevant is when the Prime Minister dies (upon which the person next in the line of succession serves as the head of a government "ad interim") or when the Prime Minister is on leave or for any other reason incapable of serving, but still remains in office.  This might be compared to the Presidential line of succession in the United States, where the person next in line assumes the Presidency throughout the remainder of the term if the President dies, resigns or is impeached. Barnaby Thomas Gerard Joyce (born 17 April 1967) is an Australian politician who has served as the Deputy Prime Minister of Australia since 18 February 2016, as the Leader of the National Party of Australia since 11 February 2016, and as the Minister for Agriculture and Water Resources since 21 September 2015.  He was sworn in as Minister for Agriculture in the Abbott Government on 18 September 2013.  Water Resources was added to his portfolio on 21 September 2015 in the Turnbull Government. The Abbott Government was the federal executive government of Australia led by Prime Minister Tony Abbott.  The Government was made up of members of the Liberal–National Coalition.  The Leader of the Nationals, Warren Truss, served as Deputy Prime Minister.  Following the 2013 Australian federal election on 7 September, the Coalition defeated the second Rudd Government, ending six years of Labor Government.  The Abbott Government was sworn into office on 18 September 2013.  Less than two years later on 14 September 2015, Malcolm Turnbull defeated Abbott in a leadership ballot, 54 votes to 44. The Deputy Prime Minister of the Socialist Republic of Vietnam (Vietnamese: "Phó Thủ tướng Cộng hòa xã hội chủ nghĩa Việt Nam" ), known as Deputy Chairman of the Council of Ministers (Vietnamese: "Phó Chủ tịch Hội đồng Bộ trưởng" ) from 1981 to 1992, is one of the highest offices within the Central Government.  The deputy prime minister has throughout its history been responsible for helping the prime minister to handle Vietnam's internal policies.  Since Vietnam is a one-party state, with the Communist Party of Vietnam being the sole party allowed by the constitution, all the deputy prime ministers of the Democratic Republic and the Socialist Republic have been members of the party while holding office.  There are currently four deputy prime ministers; Nguyễn Xuân Phúc, The office of the Deputy Prime Minister of Pakistan (Urdu: ‎ ) was created by the Prime Minister of Pakistan on 25 June 2012.  The main coalition party, Pakistan Muslim League (Q) (PML-Q), demanded to make a post of Deputy Prime Minister which was accomplished by the newly elected Prime Minister Raja Pervez Ashraf.  The main purpose of the post was to give a backup to the government in the absence of the Prime Minister.  As a result of an agreement between the ruling Pakistan Peoples Party (PPP) and the PML-Q to share ministries in the federal cabinet, Chaudhry Pervaiz Elahi was made the first Deputy Prime Minister of Pakistan. The Deputy Prime Minister of the Republic of Singapore is the deputy head of the government of the Republic of Singapore.  The role of Deputy Prime Minister is the second highest post and senior Cabinet Minister in Singapore.  The holder will sometimes assume the role of Acting Prime Minister when the PM is temporarily absent from Singapore.  Since the mid-1980s, Singapore has usually had two Deputy Prime Ministers at a time.  Only Ong Teng Cheong and Tony Tan (who later became Singaporean presidents) served under more than one Prime Minister during their time as Deputy Prime Minister. The Spouse of the Deputy Prime Minister of Malaysia refers to the spouse of the Deputy Prime Minister of Malaysia.  Since independence in 1957, the title has been occupied by women, therefore the spouse is also known as the Deputy Prime Minister's wife.  To date, eleven women have held the title of the spouse of the Deputy Prime Minister of Malaysia.
Answer: 1967