Score contribution per author:
α: calibrated so average coauthorship-adjusted count equals average raw count
In this article an alternative methodology is proposed for obtaining long time-series data for a human capital indicator based on the average number of years of education of the working-age population. In contrast to previous studies, we use Labour Force Survey microdata relating to the level of education actually completed, in order to construct temporal profiles of educational attainment and thus avoid the need to interpolate from censuses. To illustrate the method proposed, we evaluate the average number of years of education of the Spanish working-age population for the period 1910 to 2000.