**What is the source data that the Chartbook relies on? **Gini coefficient of unequivalised gross family income. A single source series is used, taken from Table A 5 in Aaberge, Atkinson and Modalsli (2016), which is derived from the average of the upper and lower bound measures presented in Table A 1. This paper uses tax records from municipal and central government tax assessments until 1966, then switches source in 1967 to micro-data from Statistics Norway.

**What is the source data that the Chartbook relies on? **Gini coefficient of equivalised (EU scale) disposable household income for the total population. A single source series is used, taken from Statistics Norway, Income and wealth statistics for households, via StatBank.

**What is the source data that the Chartbook relies on? **Pre-tax national income share held by top percentile. A single source series is used, taken from WID.world. Data relates to individuals over age 20, assuming resources are split equally within couples.

**What is the source data that the Chartbook relies on? **Post-tax national income share held by top percentile. A single source series is used, taken from WID.world. Data relates to individuals over age 20, assuming resources are split equally within couples.

**What is the source data that the Chartbook relies on? **Pre-tax fiscal income share held by top percentile. A single source series is used, taken from WID.world. Data relates to individuals over age 16. In practice, although taxation is joint, separate filing has become increasingly prevalent; from 1998 Statistics Norway ceased to treat married couples with joint taxation as one personal taxpayer

**What is the source data that the Chartbook relies on? **Share of population with equivalised (EU scale) disposable household cash income below 60% of the median. A single source series is used, taken from Statistics Norway, Income and wealth statistics for households, via StatBank. Data before 2004 are based on the Income Distribution Survey (Inntekts- og formuesundersøkelsen for husholdninger - IF). Figures prior to 1996 provided directly by Jon Epland at Statistics Norway.

**What is the source data that the Chartbook relies on? **Gross individual earnings at top decile as percentage of median from OECD; linked at 2002 to the earlier series from Statistics Norway's Income Distribution Surveys, as presented in Atkinson (2008), based on income tax records and household interviews.

**What is the source data that the Chartbook relies on? **Individual net wealth share held by wealthiest 1% from Iacono & Palagi (2021). Linked back at 2011 to earlier series from Roine and Waldenström (2015); note that this series refers to households, except for the figures for 1983-93, which refer to "adjusted individuals"; these data are based on wealth tax returns from Statistics Norway in 1912 and 1930, wealth sums tabulations 1948-93, and tabulated wealth distributions from Statistics Norway since 1993.