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Use of interpolation and extrapolation on Maddison GDP per capita data, 1820

In order to produce global estimates of historical poverty trends we have interpolated or extrapolated GDP per capita data for missing observations. Green indicates
GDP observations available in the original source.

Baseline Gini series (GCIP income and van Zanden et al. (2014))0.350.40.450.50.550.6GDPpercapita(2011int-$)ChinaChinaIndiaIndiaFranceFranceJapanJapanSpainSpainNigeriaNigeriaPolandPolandSouth KoreaSouth KoreaIranIranMexicoMexicoRomaniaRomaniaBelgiumBelgiumKenyaKenyaSwitzerlandSwitzerlandExtrapolated using Prados de laEcosura (2012)Maddison - extrapolated usingaggregate bloc growth rateMaddison - extrapolated using averageregional growth rateMaddison - interpolatedMaddison - original

Source: OWID based on Maddison Project Database 2020, GCIP, van Zanden et al. (2014), de la Escosura (2012)

1820
2017

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