50 and <=100]]> China, Russia, North Korea, South Korea, Japan 50-100 mm 40682650 23 35302335 18168 4645249 704971 11927 20 0 2 0 0 100 and <=250]]> Russia, China, North Korea, South Korea 100-250 mm 9471586 5 6410428 764 2812283 248111 0 3 0 1 0 0 250 and <=500]]> North Korea, South Korea 250-500 mm 87209 0 0 0 32332 54877 0 0 0 0 0 0 500 and <=750]]> South Korea 500-750 mm 1070 0 0 0 0 1070 0 0 0 0 0 0 750 and <=1000]]> 750-1000 mm 0 0 1000 and <=10000]]> more than 1000 mm 0 0