Passage: The party held a single seat (Jaromír Štětina) in the Senate (upper house of the Parliament of the Czech Republic) between 2004 and 2010. In the 2006 legislative election the party received 6.3% of the vote and won six seats in the lower house – the Chamber of Deputies. This subsequently led to taking part in the governing coalition, together with the Civic Democrats (ODS) and the Christian Democrats (KDU–ČSL) from January 2007 to March 2009 (for more details see Mirek Topolánek's Second Cabinet). However the Green Party was unable to repeat its success in 2010 elections, losing all seats in both chambers.

Question: What was the first year in which the party took part in the coalition?
2007