For those that are interested MR also did a post about this too recently. Further thoughts on the economics of imperialism

There are also a few interesting charts and obvious correlations for example

We found that since the end of WW2, the imperialist bloc (IC) annually got around 1% of their GDP through the transfer of surplus value in international trade from the rest of the major ‘developing’ economies (DC) in the G20; while the latter lost about 1% of their GDP in surplus value transferred to the imperialist bloc. And these ratios were rising.

What I also found was that after accounting for the debits ie income flowing out, the NET position was even starker. The annual net flow of income to the G7 economies was around 0.5% of G7 GDP. Indeed, the top five imperialist economies (G5) obtained a staggering 1.7% of their annual GDP from such net inflows. In contrast, the BRICS economies lost 1.2% of their GDP a year in net outflows.

If you look at the net income flows for each G7 and BRICS countries, the biggest gainers over the last two decades have been Japan with its huge foreign asset holdings and the UK, the rentier centre of financial circuitry. Those BRICS countries that have lost the most (as a share of their GDPs) have been South Africa and Russia.