At the current rates of growth of US and China oil imports and consumption, China's oil consumption will match US oil imports by '16-'17. China's oil imports and consumption will reach parity with the US by '21-'22, at which point the US and China will together consume 60% of peak global oil production (assuming 73-75M bbl/day) versus 37-38% today, leaving the rest of the world to adapt to receiving the remaining 40% (35-40% less than is received today).
However, at the same trend rates of imports and consumption, the US and China will consume 80% of global oil production by the late '20s to early '30s, leaving the rest of the world just 20% of supplies, and China is on track to consume the entire world's oil production by the '40s-'50s; needless to say, this cannot occur.
Assuming the US and China can secure the necessary oil (???), and that global oil production remains at the plateau since '04-'05 (???), the EU+, Latin America, and Africa will experience a decline in oil supplies/consumption of 35-70% over the next 10-20 years, i.e., 4-6% avg. annual decline over the period. (This does not include faster depletion and/or the higher price of oil reducing growth of demand and thus cutting further supplies/consumption for the EU, Latin America, and Africa.)