50 and <=100]]> Russia, China, North Korea, South Korea, Japan 50-100 mm 31884190 18 1541704 449783 2691690 22501376 4699635 0 0 1 13 2 100 and <=250]]> China, Russia, North Korea, South Korea, Japan 100-250 mm 33971997 22 23474 10103 5043460 25717773 3177185 0 0 3 16 2 250 and <=500]]> North Korea, South Korea 250-500 mm 268947 0 0 0 125902 143045 0 0 0 0 0 0 500 and <=750]]> Japan 500-750 mm 172 0 0 0 0 0 172 0 0 0 0 0 750 and <=1000]]> 750-1000 mm 0 0 1000 and <=10000]]> more than 1000 mm 0 0