50 and <=100]]> Canada, United States 50-100 mm 21358569 12 126817 21231752 0 12 100 and <=250]]> Canada, United States 100-250 mm 8929402 5 7573 8921829 0 5 250 and <=500]]> 250-500 mm 0 0 500 and <=750]]> 500-750 mm 0 0 750 and <=1000]]> 750-1000 mm 0 0 1000 and <=10000]]> more than 1000 mm 0 0