Apple’s efforts to secure the China Mobile deal were long, drawn out and likely involved rather more negotiation than the company is used to. But if you ever had any doubts as to the importance of those efforts in China, Japan and elsewhere in the Asia-Pacific region, the above two charts, compiled by Fortune, make the reason very clear.

The bad news for Apple is that revenue from its two biggest segments — Europe and the Americas — have begun to contract, not just as a percentage of total revenue, but in dollar terms as well. The good news is that Japan, Asia Pacific and Greater China have so far more than taken up the slack. In Q1 2014, Apple’s combined Asian sales were $17.4 billion, more than Europe ($13 billion) and closing in on the Americas ($20 billion).