Government effectiveness during each prime minister's tenure

Every prime minister since 1991, ranked by how the government effectiveness changed from their first day in office. Politare shows what happened during a tenure; it does not claim the office-holder caused it.

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Results

Order

#	Prime minister	In office	Total	Per year
1	Katrín Jakobsdóttir	30 Nov 2017 – 9 Apr 2024	−0.3 points 2017 → 2023	−0.1 points/yr
2	Sigmundur Davíð Gunnlaugsson	23 May 2013 – 7 Apr 2016	−2.0 points 2012 → 2015	−0.7 points/yr
3	Jóhanna Sigurðardóttir	1 Feb 2009 – 23 May 2013	−2.4 points 2008 → 2012	−0.6 points/yr
4	Geir Haarde	15 Jun 2006 – 1 Feb 2009	−5.3 points 2005 → 2008	−1.8 points/yr

Sorted by total, highest first. Every row is indexed to the last count complete before the first day in office ("from" marks a start that had to move because that count had no data, or because the period cut it); Levels are per cent changes, rates are differences in points; "per year" compounds levels and divides rates. Tenures with under 12 months, or under three observations, are left out. points, 0 to 100, higher is better · World Bank, Worldwide Governance Indicators (GOV_WGI_GE.SC): perceptions of the quality of public services, the civil service and of policy-making, a score from 0 to 100 with its 90 % interval · Iceland data · as of Oct 2026.