I can't make head or tails of this chart. How many people had a salary between 500$ and 1000$ in the blue curve? The area under the curve is completely distorte

I can't make head or tails of this chart. How many people had a salary between 500$ and 1000$ in the blue curve? The area under the curve is completely distorted by the logarithmic x-axis. Also, doesn't the second graph on https://ourworldindata.org/global-economic-inequality https://ourworldindata.org/global-economic-inequality suggest that inequality has been steadily rising?