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α: calibrated so average coauthorship-adjusted count equals average raw count
Using yearly register data on the full population of Sweden we study gender differences in top incomes, down to the top 0.01 percentile group, over the period 1971–2017. We find that, while women are still a minority of the top decile, and typically make up a smaller share the higher up in the distribution we move, their presence has steadily increased in all top groups over the past half-century. At the beginning of the period, top income women relied more on capital incomes, but the rise in the share of top women is not due to the growing importance of capital. Instead, women have increased their presence in the top by gains in the top of labour incomes, while top income men have captured most of the growth in capital incomes. Studying gender differences in observable characteristics we find small gender differences in some respects, convergence in others, but also some important remaining differences. Overall, our results suggest that many findings in the top income literature have a clear gender component and that understanding gender equality in the top of the distribution requires studying not only earnings and labour market outcomes but also incomes from other sources, as well as family circumstances.