Angus Maddison's estimates of historical GDP are outdated now. I'd look at works like Broadberry's China, Europe and the Great Divergence: A Study in Historical National Accounting, 980-1850 [1].
> The human economy has grown super-exponentially. The bigger it has gotten, the faster it has doubled, on average. The global economy churned out $74 trillion in goods and services in 2019, twice as much as in 2000.
[1]https://www.economics.ox.ac.uk/oxford-economic-and-social-hi...