Question: Since when has the announcer of Mobility Pricing been a member of the Swiss Federal Council?

Context paragraphs:
Federal Statistics Committee (Switzerland): The Swiss Federal Statistics Committee (FStatC) is an advisory body for the Federal Council, the Federal Statistical Office and other statistics producers of the Confederation.  It includes high-ranking representatives from the cantons and municipalities, from the economy, social partners, the scientific world, the Swiss National Bank as well as from the federal administration.  The committee was established with the nomination of its members by the Federal Council on 10 November 1993.  Its legal basis is the Federal Statistical Act of 9 October 1992 and the Ordinance of 30 June 1993 on the Conduct of Federal Statistical Surveys.

Mobility Pricing: Mobility Pricing is a planned traffic congestion pricing system in Switzerland which was announced by Doris Leuthard, the Swiss transport minister, on 30 June 2016.

ETH Board: The Board of the Swiss Federal Institutes of Technology (ETH Board, German: "Rat der Eidgenössischen Technischen Hochschulen", French: "Conseil des écoles polytechniques fédérales") is the strategic unit elected by the Swiss Federal Council to manage the Swiss Federal Institutes of Technology Domain (ETH Domain).

Alain Berset: Alain Berset (born 9 April 1972) is a Swiss politician of the Social Democratic Party.  Since 1 January 2012, he is a member of the Swiss Federal Council, the seven member Swiss government, and head of the Federal Department of Home Affairs (the Swiss interior minister).  Before being elected to the Federal Council in December 2011, he was a member of the Swiss Council of States for the Canton of Fribourg since 2003, serving as the chamber's president during the 2008/2009 term.

List of Presidents of the Swiss Confederation: The List of Presidents of the Swiss Confederation (1848–present) presents the presiding member of the Swiss Federal Council, Switzerland's seven-member executive.  Elected by the Federal Assembly for one year, the President of the Confederation chairs the meetings of the Federal Council and undertakes special representational duties. " Primus inter pares", he or she has no powers above the other Councillors and continues to head his or her department (see President of the Swiss Confederation for full details).

Doris Leuthard: Doris Leuthard (born 10 April 1963) is a Swiss politician and lawyer.  Since 1 August 2006, she has been a member of the Swiss Federal Council, and was elected as President of the Swiss Confederation for 2010 and 2017.

Rudolf Friedrich: Rudolf Friedrich (4 July 1923 – 15 October 2013) was a Swiss politician, lawyer and member of the Swiss Federal Council (1982–1984).  He was elected to the Swiss Federal Council on 8 December 1982 and, for health reason, resigned his office on 20 October 1984.  He is affiliated to the Free Democratic Party.  During his office time he held the Federal Department of Justice and Police.

Federal administration of Switzerland: The federal administration of Switzerland (German: "Bundesverwaltung" , French: "Administration fédérale" , Italian: "Amministrazione federale" , Romansh: "" ) is the ensemble of agencies that constitute, together with the Swiss Federal Council, the executive branch of the Swiss federal authorities.  The administration is charged with executing federal law and preparing draft laws and policy for the Federal Council and the Federal Assembly.

Micheline Calmy-Rey: Micheline Anne-Marie Calmy-Rey (born 8 July 1945) is a Swiss politician.  She was member of the Swiss Federal Council and became Switzerland's foreign minister as head of the Federal Department of Foreign Affairs from 2003 to 2011.  She was Vice President of the Confederation in 2006 and 2010 and President in 2007 and 2011.  She resigned her office as member of the Federal Council on 31 December 2011.

Ueli Maurer: Ulrich "Ueli" Maurer (born 1 December 1950 in Wetzikon) is a member of the Swiss Federal Council.  Formerly head of the Swiss Federal Department of Defence, Civil Protection and Sports (the Swiss defence minister), Maurer has been the head of the Federal Department of Finance (the Swiss finance minister) since January 1, 2016.

Supporting paragraphs: Mobility Pricing Doris Leuthard
Answer: 1 August 2006