The table shows a country’s trade union membership in millions between 2008 and 2011.
What can be concluded about the country’s trade union membership in the period 2008 to 2011?

1 )
Trade unions had least members in 2010.
2 )
Trade unions had most members in 2011.
Trade union membership fell between 2008 and 2009.
4 )
Trade union membership rose between 2009 and 2011.
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