Economic output (GVA) during each governing mayor's tenure

Every governing mayor since 1991, ranked by how economic output (GVA) changed from their first day in office, next to Norway over the same months. Politare shows what happened during a tenure; it does not claim the office-holder caused it.

#	Governing mayor	City	In office	Total	vs Norway	Per year	Chart
1	Raymond Johansen	Oslo	21 Oct 2015 – 25 Oct 2023	+28.8% 2015 → 2023	+10.5 pts Norway +18.3%	+3.2%/yr
2	Stian Berger Røsland	Oslo	29 Sep 2009 – 21 Oct 2015 from 2010	+16.2% 2010 → 2015	+3.0 pts Norway +13.2%	+3.0%/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); Norway is measured over the same months. Levels are per cent changes, rates are differences in %; "per year" compounds levels and divides rates. Tenures with under 12 months, or under three observations, are left out. NOK billion, 2023 prices · Statistics Norway, regional accounts (table 09391): Oslo's gross value added at basic prices, at current prices in 2023 and carried back by each year's change in volume, yearly from 2010, the latest years preliminary; the chain is Politare's. The parent line is Mainland Norway's GDP at basic values, constant 2023 prices (national accounts, table 09189) · city (the municipality, also a county) data · as of Jul 2026.