Sɛnea akontaabu a ɛtwa toɔ a ɛfiri International Rubber Research Organization (IRSG) kyerɛ no, wiase nyinaa rɔba a wɔde di dwuma wɔ afe 2017 mu no nyinaa yɛ tɔn ɔpepem 15.18, ɛyɛ nkɔanim 2.1% sene afe a atwam no. Ɛne sɛ, wiase nyinaa rɔba a wɔde di dwuma no akɔ soro afe biara fi 2011.
Sɛnea ɔman no akontaabu kyerɛ no, rɔba a wɔde yɛ nneɛma a wɔde di dwuma no yɛ nea ɛkorɔn sen biara wɔ China, na ɛdu tɔn ɔpepem 4. ton ɔpepem 324, na ɛyɛ nkɔanim 0.5%. Gye afe afe wɔ afe 2014 mu no, mfeɛ a aka no boroo afe afe dodoɔ no so na ɛkyerɛɛ nkɔsoɔ a ɛrekɔ so.
China, United States akyi no, rɔba a wɔde yɛ nneɛma a ɛyɛ tɔn 1.874, a ɛba fam 2.0%. Afe a etwaam no akyi no, ɛso atew bio.
Beaeɛ a ɛtɔ so mmiɛnsa wɔ Japan ne 875,000 tɔn, afe biara mu nkɔanim a ɛyɛ 1.0%. ɛnam sɛ wɔhwehwɛ mfiridwuma mu nneɛma te sɛ hoses ne gaskets bio nti, ɛdanee firii afe a atwam no mu a ɛso teɛ kɔɔ nkɔanim mu.
Bio nso, rɔba a wɔde ayɛ adwuma a wɔde di dwuma wɔ Asia aman a ɛreba te sɛ India, Thailand ne Malaysia mu no renya nkɔanim afe biara.